Monroe Calculating Machine
date: label: date made
content: 1927
name: label: maker
content: Monroe Calculating Machine Company
notes: label: Description
content: This full-keyboard, non-printing, manual, modified stepped drum calculating machine has a metal frame painted black, with rounded corners. The eight columns of black and white plastic keys have a red clearance key at the bottom of each column. Rotating rods between the rows of keys serve as decimal markers. Three keys are in a column to the right of the number keys. One clears the entire keyboard. The other two are set to determine whether or not the keyboard clears after each calculation. The operating crank on the right side rotates clockwise for addition and counterclockwise for subtraction.
label: Description
content: In back of the keyboard is a carriage that has a row of 16 numeral dials for recording results and a row of eight numeral dials behind these that serves as a revolution register. Digits for the revolution register are red and black. Between the windows for these registers are two thin metal rods that carry decimal markers. The carriage shift lever is at the front of the machine. On the carriage, to the right of the result register, is a lifting knob. A crank on the right of the carriage for zeros registers on it. The machine has four rubber feet.
label: Description
content: A mark on the front reads: MONROE. A red tag attached to it reads: PATENT DEPT. (/) #254. A white tag attached to it reads: Monroe Calculator 8 Banks (/) Hand Side Crank (/) #92701 (/) (A. Williamson) (/) Rack B Shelf #3.
label: Description
content: This is model #254 from the Patent Division of Burroughs Corporation. Date based on assumption model number is 92701.
label: Description
content: Compare to MA.334711, MA.307386, and 1983.0831.1.
label: Description
content: Reference:
label: Description
content: J. H. McCarthy, <I>The American Digest of Business Machines</I>, Chicago: American Exchange Service, 1924, p. 551.
label: Location
content: Currently not on view
place: label: place made
content: United States: New Jersey, Orange
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 Burroughs Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1982.0794.58
label: catalog number
content: 1982.0794.58
label: accession number
content: 1982.0794
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 19.5 cm x 44 cm x 40 cm; 7 11/16 in x 17 5/16 in x 15 3/4 in