Educational Games -Vintage Style Wooden Abacus-15.75 Inch-Professional 17 Column Soroban Calculator with Reset Button Highlights Generic Brand Vintage Style Wooden Abacus-15.75 Inch-Professional 17 Column Soroban Calculator with Reset Button Description: LARGE DIMENSION: 15.75 x 3.74 x 0.9 inches. It is a perfect size for adult use and decoration STRONG WOODEN MATERIAL: solid wood frame, plastic beads and metal corner protectors NUMBER OF BEADS: 5 beads per row x 17 rows NON-SLIP: wooden feet non-slip rubbers at the base of the abacus prevent your abacus from slipping CONVENIENT TO USE: the beads slide easily and this professional wooden 17 digit soroban abacus comes with a convenient reset button specification: Material: wood, plastic, metal Size : approx. 40x9.5x2.3cm / 15.75x3.74x0.9inch Package includes: 1 piece Abacus Note: Color may be slightly different due to the color calibration of each individual monitor. Please allow slight measurement deviation due to manual measurement.