Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/4 Beads 23 Rows ST75 tengu Condition: Good condition

Condition: Good condition

It features a beautiful and colorful floral design in purple

but the rim and the bottom are black

hook on the back of the water bottle

25 cm long

Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/4 Beads 23 Rows ST75 tengu Condition: Good conditionJapanese Soroban Abacus Calculator Tool This is a vintage Japanese abacus, or soroban. It is a mathematics calculating tool and is considered the first calculator in Japan. The Japanese abacus is different from the parent Chinese version. It has a top section of single beads and a bottom of stacked beads, usually five. At the very center is one unmarked stack used for decimal places for more complicated calculations. Many primary schools all over