Soroban, or Japanese Abacus

Description
This tiny abacus has an open black plastic frame with a black plastic cross piece. It contains seven metal rods. Each carries one white plastic bead above the cross piece and four below. There are no maker's marks on the instrument.
Location
Currently not on view
Physical Description
plastic (overall material)
metal (overall material)
Measurements
overall: .4 cm x 4.4 cm x 2 cm; 5/32 in x 1 23/32 in x 25/32 in
ID Number
1981.0922.18
catalog number
1981.0922.18
accession number
1981.0922
Credit Line
Gift of John White
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Abacus
Data Source
National Museum of American History, Kenneth E. Behring Center

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