Arithma by Addiator
date: label: date made
content: ca 1960
name: label: distributor
content: Harrison Home Products Corporation
label: maker
content: Addiator G.m.b.H.
notes: label: Description
content: This black and gold-colored metal, comb-sized notched band adder has six columns above for addition and six below for subtraction. Ten notches of any one band appear only in addition, ten in both addition and subtraction, and ten in subtraction alone. The columns on top are crook-shaped to allow for carrying and those at the bottom in the shape of an inverted crook to allow for borrowing. Six holes in the middle show the result. Across the top is a zeroing bar. Leather case.
label: Description
content: The firm of Carl Keubler produced adders under the name Addiator in Berlin (later West Berlin) from 1920 until the 1980s. This is one of three versions of the Addiator in the Smithsonian collections. According to the donor, an employee of Volkswagen of America in Chicago brought it to the United States.
label: Description
content: Instructions stored with documentation.
label: Description
content: References: <I>Popular Science</I>, vol. 172, March, 1958, p. 66.
label: Description
content: <I>Popular Science</I>, vol. 178, January, 1961, p. 41.
label: Description
content: Thorp & Martin Corp., <I>Office Supplies and Equipment Purchasing Guide</I>, Boston, 1968, p. 372.
label: Description
content: P. Kidwell, <I>Rittenhouse</I>, 1994, 8:78-96.
label: Description
content: Martin Reese, <I>Historische Buerowelt</I>, 43 (September 1995).
label: Location
content: Currently not on view
place: label: place made
content: Germany: Berlin, West Berlin
label: place distributed
content: United States: New Jersey, Harrison
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Adder
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Irving N. Segal
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0543.01
label: accession number
content: 1986.0543
label: catalog number
content: 1986.0543.01
objectType: label: Object Name
content: adder
physicalDescription: label: Physical Description
content: leather (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: .8 cm x 6.2 cm x 17.2 cm; 5/16 in x 2 7/16 in x 6 25/32 in