Abacus, 13-digit Japanese-style
$20.00Price
13-digit Japanese-style soroban abacus featuring 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 3 x 6 inches
