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Addiator Universal Standard model - mekaaninen taskulaskukone 1950 - mukana alkuperäinen kotelo ja käyttöohje, koko 16x4x0,3 cm , valmistettu vuodesta 1920 vuoteen -80<br/><br/>DescriptionThis metal notched band adder has a metal stylus. The front of the instrument is painted green, the back, black. One can enter numbers up to six digits long. The clearing bar is at the top. The case is clear plastic. For instructions, see 1988.0807.07.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. It was given to the Museum by the machinist and museum specialist George A. Norton, Jr. Norton used the device to do routine addition, subtraction, and multiplication until he acquired an electronic calculator.Reference: Martin Reese, Historische Buerowelt, 43 ).LocationCurrently not on viewObject Nameadderdate madeca 1955distributorHarrison Home Products CorporationmakerAddiator G.m.b.H.Physical Descriptionmetal (overall material)plastic (overall material)Measurementsoverall: .6 cm x 5.5 cm x 17 cm; 1/4 in x 2 5/32 in x 6 11/16 inplace madeDeutschland: Berlin, Berlinplace distributedUnited States: New Jersey, HarrisonID Number1988.0807.04accession number1988.0807catalog number1988.0807.04subjectMathematicsScience & MathematicsAdderSee more items inMedicine and Science: MathematicsAdderData SourceNational Museum of American History, Kenneth E. Behring CenterCredit LineGift of George A. Norton, Jr..

21 x 30 cm.

21 x 30 cm.

15 x 21 cm.