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Abacus counting frame

 Unprocessed
Identifier: MUS-899

Content Description

Abacus counting frame from China. Very fast in modern tests with adding machines. Made of a wooden box 1/2" high. 6 1/2" by 2 1/2". Case holds 5 and 7 upright sticks, each having 5 knobs which slide. One knob each below a cross-bar running the length of the board.

Acquisition Type

Gift

Restrictions Apply

No

Dates

  • 1500-1950

Extent

1 items ; 6 1/2" by 2 1/2"

Source