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Monroe Calculating Machine Company

The Monroe Calculating Machine Company was a maker of adding machines and calculators founded in 1912 by Jay R. Monroe and Frank Stephen Baldwin based on a machine designed by Frank Stephen Baldwin.



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Monroe Calculating Machine Company
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The Monroe Calculating Machine (Office Machine Practice series) By Chester H. Katenkamp The Gregg Publishing Company 1931 58 page stapled book 142mm × 204mm
Topics: Mechanical calculator, Monroe, Instruction manual
Monroe Calculating Machine Company
by George C. Chase, I. Bernard Cohen
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Article containing the text and slides of a slideshow given in May 1952 by George C. Chase, director of research at the Monroe Calculating Machine Company starting in 1917, about five years after the company started. The slides contains a overview of various mechanical calculators.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
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A short article, "Leaps from 13th floor of Woolworth Building" from the Los Angeles Evening Herald, 19 Feb 1919, Page 11. A Monroe salesman, Richard Dwight Hutchins, had leapt to his death from a 13th floor Monroe office.
Topics: los angeles evening herald, woolworth building, suicide, monroe
Notes made by one M. H. Hitchcox on Monroe Service Bulletin 440-D pages 102 through 113, with a two-page annex not included in the MSB consisting of points to check in setting up CAA-10s.
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Monroe Calculating Machine Company
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Instruction book for the Monroe KA series of electromechanical calculator. Also known as Form 660 S. Originally printed 1928, this copy is a reprint edition from 1943.
Topics: Calculator, Instructions, Monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Co., Inc.
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Instruction book for the Monroe MA series of electromechanical calculators. Also known as Form 878-S.
Topics: Calculator, Instructions, Monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 161, the first installment describing the functioning and adjustment of the LA-6 model mechanical calculator. Subsequent supplements continued the description. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 40C, describing some adjustments to the KAA models 1 and 2 of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 36D, describing a required adjustment when installing a new start and stop switch for the K models 1A, 2A, 1AA, and 2AA (but not 0A) of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Publication B-182, a guide for teaching the use of Monroe mechanical calculators using the Monroe Educator model of calculator. This copy is the 18th printing (June 1961) of the original 1947 document.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Form 769-S, how to compute square roots on a Monroe mechanical calculator.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Form 1038-S, describing how to perform statistical calculations such as means, standard deviations, linear correlations on the general CAA-10 electromechanical calculator and on the statistics-oriented CAA-10-3-S.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Form 1228-S, a double-sided card on how to extract square roots, with a table of factors.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 161 Supplement B, the third installment describing the functioning and adjustment of the LA-6 model mechanical calculator. Other supplements contained more description. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 135, a parts and price list for KA 203-13, KAS 203-13, KA 263 and KAS 263 model mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 127, describing the second version of the motor power unit for MA mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 244, describing a change to the through-carry unit and automatic multiplication mechanism of the LA-6-200-C mechanical calculator. The change was not to be retrofitted to existing models. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 415, describing the shift mechanism in the LA-5 and LA-6 model mechanical calculators. This document was incomplete: it mentions a large drawing which was not included. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 510, describing the retrofit of an item counter for LA-7, LN, and LNX models of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 32, describing a fix for the condition where repeated carriage shifting from extreme to extreme can cause the carry mechanism to fail on K series "2" mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 167, describing the functioning and retrofitting to the LA-6 model mechanical calculator of a mechanism which automatically controlled the repeat and non-repeat keys. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 113, describing installation of insulation on a connector in the LA model mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 257, describing an adjustment for satisfactory shift of the carriage on LA-5 and LA-6 model mechanical calculators, after all other adjustments have been exhausted. This copy appears to be a reprint of an original document which, based on MSB numbering and dates, would have been originally published between 30 December 1935 and 26 June 1936. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating...
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 40N, describing some adjustments to the KAA models 1 and 2 of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 40G, describing some adjustments to the KAA models 1 and 2 of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Publication B-251, a better way to teach arithmetic with the Monroe Educator Calculating Machine.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Publication B-154, covering basic algebra, and how to rearrange formulas for efficient calculation on a Monroe mechanical calculator.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 112A, describing adjustments for the clear-out lock for KA "C" and "E" model mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 48, describing the difference between K "3" series and other K model mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 358, describing the adjustment for a condition where the LA-5 and LA-6 models of mechanical calculator would run continuously during automatic division and multiplication. This copy is an April 1946 reprint of the original 1940 document. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Pages 3 and 4 of a Monroe Calculating Machine Company newsletter from May 1971. Page 4 in particular describes the history of the L model mechanical calculator, from 1929 to 1971.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 244, describing a change to the through-carry unit and automatic multiplication mechanism of the LA-6-200-C mechanical calculator. The change was not to be retrofitted to existing models. This copy is a reprint from February 1946 of the original 1935 document, but without color. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 285, describing the retrofit of an adjustable stop mechanism for the LA-6 model of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 257, describing an adjustment for satisfactory shift of the carriage on LA-5 and LA-6 model mechanical calculators, after all other adjustments have been exhausted. This copy appears to be a reprint of an original document which, based on MSB numbering and dates, would have been originally published between 30 December 1935 and 26 June 1936. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating...
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 238, describing an issue with the registering dials on LA-6-W and LA-6-C model mechanical calculators which can be solved with changed parts. This copy appears to be a reprint of the original 1935 document. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Machine Service Bulletin No. 420-A, describing the functions of, and how to disassemble, reassemble and lubricate, the L-160-X and L-200-X models of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 238, describing an issue with the registering dials on LA-6-W and LA-6-C model mechanical calculators which can be solved with changed parts. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 48A, a supplement to MSB 40, containing the price list for parts and assemblies of the "3" series model mechanical calculator. The field office was instructed to destroy the "3" series parts and assembly list in MSB 48. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Publication 1191-S, on how to extract square roots, cube roots, and higher roots, with tables for up to 10th roots. 
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe 912-SS,  a list of Federal Supply Identification Stock Numbers and corresponding Stock Numbers of Army, Air Force, and Marine Corps, corrected as of June 30, 1957.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 116, an illustrated guide to disassembling, assembling, and adjusting the MA-213 model mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
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Monroe publication 1045-S, instruction manual for the LN model of mechanical calculator. This is the September 1958 printing of the manual.
( 1 reviews )
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 161 Supplement D, the fifth installment describing the functioning and adjustment of the LA-6 model mechanical calculator. Other supplements contain further description. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 129, comprising the motor parts and price list for the K, LA, and MA model mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 120, describing installation of a stronger spring for the nonrepeat key on LA and MA model mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Form 994-S, a table of multiplying factors for square roots, along with instructions for use. See also: 991-S (Table of dividing factors for square roots) 769-S (Machine methods for the extraction of square root) 1191-S (Simplified methods for extracting roots) 1228-S (Simplified method for extraction of square root)
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 97, describing installation of additional carrying and counting fingers in the KAS 203-13 model mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 33, complaining that managers and salesmen do not know about machine service bulletins, specifically MSB 24. The main office especially felt that salesmen could better answer questions if they studied the MSBs. The bulletin concludes with the instruction that managers and salesmen should carefully read MSB 24, unless they've already done that, in which case they didn't have to read it again. Compliance was to be verified by the signing and sending of a card...
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 445, an outline for teaching Monroe servicemen about the L, LA, LA-5 and LA-6 models of mechanical calculator. Details the order the models are presented in, the machine service bulletins that should be studied, and practice tasks. Missing pages 4 and 5. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 270, describing a change made to all LA model mechanical calculators except the LA-6 and all MA models except 2-carriage models, to eliminate noise during repetitive cycles and to prevent the machine from stopping off-center. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 422, describing the inspection, disassembly, cleaning, reassembly, lubrication and testing of all Monroe mechanical calculator models using small motors. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Special Service Letter 106, 400 series machines red print feature, describing installation of the red print special feature. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Contract No. GS-00S-15300, the 1958 price list for the United States Government. Describes and depicts all the models of Monroe calculator available to the government in 1958, along with prices, discounts for volume, and prices for rental and maintenance. Found on Ed Thelen's site (ed-thelen.org), this document was originally obtained from LaFarr Stuart, who obtained it from a Monroe salesman.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 430, describing a washer being added to prevent prevent misalignment of parts after automatic division. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 130, stating that extra manual crank handles for the automatic MA mechanical calculator should be sent back to the main office. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe publication B-102, an office practice course using the Monroe LN Educator mechanical calculator. This copy is the 26th printing, Dec 1961.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 112, describing retrofit of a new lockin g mechanism to prevent the clear-out mechanism from locking up under rapid operation of the clear keys of KA "C" and "E" model mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Book 1 of 6 of a service training manual for the Monroe Calculating Machine Company. The envelope of product photos referred to at the end of the book is not present. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 429, describing a revision in the design of the plus and minus key mechanism in LA, LA-5 and LA-6 models of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 215, describing how registering and counting dial shafts on L-model mechanical calculators will be stamped based on their alignments. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 24, illustrating the assembly and adjustment of K series "1" and "2" mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 230, indexing adjustments to LA-6, MA-4 and MA-5 mechanical calculators. Shows issue versus Machine Service Bulletin where the adjustment for the issue appears, up to 1935. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 429-A, describing how to install the revised plus and minus key mechanism. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Service manual for the Monroe Calculating Machine Company's obsolete data/log printer, model MC 10-40. The MC 10-40 was a 16 columns electromechanical printer printing on a continuous paper strip. The characters it could print were digits 0-9, A, B, -, +, and a dot.
Topics: printer, schematics
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 93, describing how to adjust the speed of 115 volt and 230 volt universal motors used in Monroe mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 45, complaining that KAA models of mechanical calculator were being sent to the main branch improperly packed resulting in broken pieces and machines in "deplorable condition". Also, some machines were being sent without the identification form 27-M. Contains instructions on how to pack the machines properly for shipment. This bulletin is unique in the amount of exasperation, sarcasm, and exhortation displayed. This copy was scanned from a set of...
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 100-B, specifying the condenser and resistor values for the 105-volt motor used in the LA model of mechanical calculator. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 40B, containing plates 47 - 51 as an addition to MSB40, showing the symptoms when various springs in the K 1AA and 2AA models of mechanical calculator are unhooked. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 40E, containing a parts a price list for full automatic and 3-series model K machines. This list was intended to obsolete the list originally provided in MSB40 and MSB48. Note that there is a second MSB 40E that was published 18 months earlier. I have called that document MSB 40E. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
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Monroe Calculating Machine Company
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Instruction booklet for the Monroe LA series electromechanical calculators.
Topics: monroe, monroe machine, monroe calculator
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Form 991-S, a table of dividing factors for square roots, along with instructions for use. See also: 994-S (Table of multiplying factors for square roots) 769-S (Machine methods for the extraction of square root) 1191-S (Simplified methods for extracting roots) 1228-S (Simplified method for extraction of square root)
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 108-A, description and retrofit instructions for plus, minus, and shift key locks on KAE and KASC model mechanical calculators. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, mechanical calculator, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe publication GS-713, instruction manual for the Simplex Electric Models 410-11-011 and 408-11-011 mechanical printing adding machines.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 193, describing some adjustments for specific problems. This is a June 1945 reprint of the original 1934 document. Based on comparisons of other reprints, this document was most likely generated from the original mimeograph masters with the exception of a small reprint notice. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, mechanical calculator, monroe calculating machine, monroe
Monroe Calculating Machine Company
by Monroe Calculating Machine Company
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Monroe Machine Service Bulletin No. 177, describing the functioning and retrofitting to the LA-5 and LA-6 model mechanical calculators of an improved division lever return mechanism. The company wanted all existing and new LA-6 calculators to be retrofitted with this modification. This copy was scanned from a set of documents originally kept at the Toledo, Ohio branch of the Monroe Calculating Machine Company.
Topics: calculator, monroe calculating machine, monroe