Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/4 Beads 27 Rows ST66 kayoi-tokkuri 5 cm wide x 10

5 cm wide x 10 cm tall x 8 cm deep

9 cm wide x 24

Higan / Jogenji Temple

Design: Yellow paper

or sensubukuro

Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/4 Beads 27 Rows ST66 kayoi-tokkuri 5 cm wide x 10Japanese 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