Monroe Model L160-X Calculating Machine
date: label: date made
content: 1953
name: label: maker
content: Monroe Calculating Machine Company
notes: label: Description
content: This lightweight modified stepped drum full-keyboard non-printing calculating machine is manually operated. It has a gray steel case and gray and white plastic keys, colored to distinguish digits of differing place value. The eight columns of keys each include nine digit keys and one zeroing key. The zeroing key is the opposite color from the rest of the keys in the column. Between the columns of keys, and under the case, are metal rods visible through windows in the case. These serve as decimal markers. To the right of the number keys are two orange buttons, one of which is marked R (for use in repeated addition or subtraction), and an orange clearance key. A crank on the right side rotates clockwise for addition and counterclockwise for subtraction.
label: Description
content: In back of the keyboard is the carriage, with 16 result dials and eight revolution register dials. The dials of the revolution register are numbered around the edge from 9 to 0 white and from 1 to 9 in red. A crank for clearing the carriage is on its right side. The carriage shift crank is at the front. Two rubber feet are at the front and two metal standing pieces extend from the back at the bottom, holding the machine at an angle.
label: Description
content: This model of the Monroe normally came with a carrying case, but this does not survive.
label: Description
content: Compare MA.336523 (1978.0402.01).
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: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Calculating Machines
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Albert J. and Delores Cippel, in memory of Sydney F. Toy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1993.0396.01
label: catalog number
content: 1993.0396.01
label: maker number
content: L160-X 628561
label: accession number
content: 1993.0396
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: rubber (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: steel (overall material)
label: Measurements
content: overall: 15 cm x 29.4 cm x 23.7 cm; 5 29/32 in x 11 9/16 in x 9 11/32 in