Monroe Model K-16 Calculating Machine
date: label: date made
content: 1927
name: label: maker
content: Monroe Calculating Machine Company
notes: label: Description
content: The manual, full-keyboard non-printing modified stepped drum calculating machine has a metal frame painted black and a steel keyboard painted green. Eight columns of uniformly shaped black and white color-coded keys serve for data entry. At the bottom of each column is a red clearance key. Metal rods between the rows of keys are decimal markers. Three key stems 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 (at least one of these keys looks like a replacement). A metal lever is right of the keyboard and a metal knob to the left. The operating crank on the right side rotates clockwise for addition and counterclockwise for subtraction.
label: Description
content: The carriage behind the keyboard has a row of 16 black numeral dials for recording results, and a row of eight white numeral dials which serve as a revolution register. The revolution register, which has no carry, has black digits for addition and red ones for subtraction. Two thin metal rods between the windows for these registers carry decimal markers. The carriage shift crank is at the front of the machine. A knob for lifting the carriage is right of the result register, and a crank for zeroing dials on the carriage is on its right side. There are four rubber feet. A bell rings when the result passes through zero (as in over-division).
label: Description
content: A mark on the front of the machine reads: MONROE. A mark on the back reads: MONROE (/) Calculating Machine Company (/) New York, U.S.A. The serial number, recorded on the bottom edge of the left side of the carriage, is 91928
label: Description
content: Reference:
label: Description
content: J. H. McCarthy, <I>The Business Machines and Equipment Digest</I>, 1928, pp. 9-29 to 9-33.
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
label: See more items in
content: Calculating Machines
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Walton G. Banks, Inc.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1984.0682.05
label: catalog number
content: 1984.0682.05
label: maker number
content: 91928
label: accession number
content: 1984.0682
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: aluminum (overall material)
label: Physical Description
content: steel (overall material)
label: Measurements
content: overall: 19.5 cm x 46 cm x 39 cm; 7 11/16 in x 18 1/8 in x 15 11/32 in