Object Details
distributor
Thoresen, Inc.
Description
This notched band adder has nine bands, eight bracket-shaped columns, and nine display windows. It has a black plastic back, a metal cover plate, and a metal stylus. A zeroing bar is across the top. The stylus fits on the side. There are two rows of numbers alongside the columns, one for addition and one for subtraction. There are no numbers along the extreme edges of the columns on either side. The machine was imported from West Germany.
Compare to 1980.0787.01 and 2013.0197.01.
Location
Currently not on view
Credit Line
Gift of S.H. Oliver
date made
ca 1955
ID Number
MA.336448
accession number
1977.1159
catalog number
336448
Object Name
adder
Physical Description
metal (overall material)
plastic (overall material)
Measurements
overall: .8 cm x 8.2 cm x 14 cm; 5/16 in x 3 7/32 in x 5 1/2 in
place made
West Germany
place distributed
United States: New York, New York City
See more items in
Medicine and Science: Mathematics
Adder
Science & Mathematics
Data Source
National Museum of American History
Subject
Mathematics
Link to Original Record
Record ID
nmah_690265