Abacus, Japanese Vintage Wooden Soroban #4
$50.00Price
15 digit Japanese Vintage Wooden Abacus Soroban #4. Features a dark frame, a horizontal separating bar, and two-toned beads. Design: 13 vertical rods with one upper deck bead ("5-value") and four lower deck beads ("1-value") per rod. Function: A manual counting and calculation tool used for basic arithmetic, education, and rapid mental math visualization. Roughly 6 x 12 inches
