Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/5 Beads 21 Rows ST56 Chopstick neck opening size: 4

neck opening size: 4

This is an antique Japanese storage case for phonograph and vinyl records

The front and back covers are brown paper

Label on lid slightly discolored

Leaf design

Japanese Wooden Abacus Soroban Math Calculating Tool Vtg 1/5 Beads 21 Rows ST56 Chopstick neck opening size: 4Japanese 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