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13 digit professional abacus with wooden frame
Beads Number: 7 Beads Per Row x 13 Rows
Measures L11" x W4.5" x D0.75" (28cm x 11.5cm x 1.5cm)
Both practical and educational. (Instruction not included)
Stock in the US! Fast Shipping !
Vintage-Style 13 Digits Rods Wooden Abacus Soroban Chinese Calculator Counting Tool 11 B01HHUXMN2