Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/5 Beads 15 Rows ST67 ranma 66 cm long x 43

66 cm long x 43 cm wide

Itto(18L)sakedaru (no cork)

is white and blue with a rope net design

tower: 8 cm long x 8 cm wide x  15 cm tall

7 cm wide x 3 cm tall

Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/5 Beads 15 Rows ST67 ranma 66 cm long x 43Japanese 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 Japan