Addometer Model C

Description:

This eight-wheeled stylus-operated non-printing adding machine has plastic wheels and a metal frame. The first wheel is red and has eight holes near its edge for adding fractions. The second wheel from the left is white and has 12 holes near its edge for adding inches. The remaining six wheels each have ten holes around the edge. The rightmost is red, the next three are white, and the next two are red. All the wheels are labeled around the outside with digits for use in addition, and around the inside with digits for use in subtraction. A steel stylus and a clearing bar fit into the right side.

The top edge of the instrument has an 11-inch scale of equal parts, divided to sixteenths of an inch. A sales receipt indicates the machine was purchased September 19, 1951, by Frederick Mathesius for $12.95. A second sheet gives operating instructions. The machine is stored in a tan and purple cardboard box. It was made by Reliable Typewriter & Adding Machine Company of Chicago, Illinois.

References:

Typewriter Topics, vol. 66, August, 1927, pp. 36-37 (announced as coming in September - $10.00), Typewriter Topics, vol. 72, June, 1929, p. 29 (cost $15.00); Office Appliances, vol. 87, January, 1948, p. 138, 182 (price $12.95); Office Appliances, vol. 98, Oct., 1953, p. 233 (price $14.95).

Date Made: 1951

Distributor: H. & M. Button CompanyMaker: Reliable Typewriter & Adding Machine Corporation

Location: Currently not on view

Place Made: United States: Illinois, ChicagoPlace Distributed: United States: New York, Rochester

Subject: Mathematics

Subject:

See more items in: Medicine and Science: Mathematics, Adding Machines, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Gift of Douglas E. Evelyn & Martha M. Evelyn

Data Source: National Museum of American History

Id Number: 1996.0220.01Catalog Number: 1996.0220.01Accession Number: 1996.0220

Object Name: adding machine

Physical Description: paper (overall material)plastic (overall material)metal (overall material)Measurements: overall: 1.8 cm x 30.5 cm x 6.5 cm; 23/32 in x 12 in x 2 9/16 in

Guid: http://n2t.net/ark:/65665/ng49ca746a5-0365-704b-e053-15f76fa0b4fa

Record Id: nmah_690628

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