Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/5 Beads 15 Rows ST69 beige opening size:3 cm

Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/5 Beads 15 Rows ST69 beige opening size:3 cmJapanese Soroban Abacus Calculator Tool This is a vintage Japanese abacus or soroban. It is a mathematical calculating tool and is considered the first calculator in Japan. The Japanese abacus is different from the original Chinese version. It has a top section of single beads and a bottom of stacked beads, usually five. At the center is one unmarked stack used for decimal places for more complicated calculations. Many primary schools all over Japan

SKU: 49971725585 · From creatorsinfotech.com