Monroe Model LA5-160x Calculating Machine
date: label: date made
content: 1948
name: label: maker
content: Monroe Calculating Machine Company
notes: label: Description
content: This full-keyboard, non-printing electric modified stepped drum calculating machine has a metal frame painted black, with a plate under the keyboard that appears to be unpainted. The eight columns of white plastic number keys have nine keys in each column. Below each column is a tenth white key used for zeroing. Between the columns of keys, and under the plate, are metal rods visible through windows in the plate that serve as decimal markers. To the right of the number keys are the subtraction and addition bars, two red buttons, and a red clearance button.
label: Description
content: In back of the keyboard is the carriage, with 16 result dials and eight revolution register dials. A carriage shift crank is at the front. The machine has four rubber feet, and a gray rubber electric cord. It has no case and the feet are not extensible at the back.
label: Description
content: A mark on the machine reads: MONROE (/) HIGH SPEED ADDING CALCULATOR. Another mark reads; PROPERTY U.S.N.BU.ORD. (/) CONTRACT NOO 1709 (/) U.S.N. NO 504487. A mark scratched on the inside of the carriage at the left reads: 273166.
label: Description
content: Compare MA.334385.
label: Description
content: The donor was a certified public accountant who had a collection of calculating machines. The date of manufacture and original cost ($375) are provided by him.
label: Description
content: References:
label: Description
content: National Office Machine Dealer’s Association, <I>Blue Book</I>, May, 1975, as compiled by Office Machine Americana, January, 2002.
label: Description
content: Monroe Calculating Machine Company, “Monroe High Speed Adding-Calculator,” Publication 780-A. This is a notebook with advertising descriptions of several Monroe calculating machines.
label: Description
content: Accession file.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Calculating Machines
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of William L. Jackson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.335424
label: accession number
content: 319049
label: maker number
content: 273166
label: catalog number
content: 335424
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: rubber (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 16.4 cm x 27.2 cm x 27 cm; 6 15/32 in x 10 23/32 in x 10 5/8 in