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Cylindrical Numeral Frame or Abacus

Cylindrical Numeral Frame or Abacus

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Description
This numeral frame is in the shape of a cylinder, with wooden discs at each end ten straight metal bars forming the sides. Each bar carries ten beads. The color of the beads is faded. There might once of been green beads along two wires, orange beads along the next two wire, uncolored beads along the next wire, and then once again green beads along two wires, orange beads along the next two wires, and uncolored beads along the final wire. A stand, which would allow the cylinder to turn, is missing.
Location
Currently not on view
Object Name
abacus
Physical Description
wood (endpieces, beads material)
metal (rods material)
Measurements
overall: 6 1/2 mi x 17.9 cm x 6.5 cm; 10.46074 km x 7 1/16 in x 2 9/16 in
ID Number
2014.3117.02
nonaccession number
2014.3117
catalog number
2014.3117.02
Credit Line
Dr. Richard Lodish American School Teaching Collection
subject
Mathematics
Education
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Arithmetic Teaching
Abacus
Data Source
National Museum of American History
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