Five Lines Wooden Abacus 5 lines standing
Abacus with clock numbers Puzzle
Abacus w/ Clock 3 uses Mini
3 in 1 Wooden Abacus Mini (w/ Clock)
10 Lines Abacus w/ Stand
Computation Study Set (3 kinds)
Wooden Abacus 10 Digits Add. & Sub.
5 Line Triangle abacus
Educational Abacus w/ Blackboard
Abacus Triangle Stand Medium
Abacus 5 digits w/ box
3 in 1 Wooden Abacus (clock, math, abacus) w/ stand