abacus
Description
3 steel wire hoops mounted on a wooden board. Each hoop has 9 wooden beads threaded on it. A back board is annotated "H T U" for hundreds, tens and units.
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Object detail
Dimensions:0 - Whole:W 12cm (W 4 3/4")
Dimensions:0 - Whole:L 22cm (L 8 11/16")
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