Wissner Wood 254 cm Student Abacus

Calculation frame 100 numerical space 25 x 17 x 4.5 cm; Frame parts and balls (diameter 13 mm) in RE wood. Extremely stable design with stainless steel bars. The count and all the basic operations (addition, subtraction, multiplication and division) as well as numerical comparisons in the range from 0 to 100 can be easily learned or consolidated. Our company has more than a 40 years long commitment in the education and training of children. Made in Germany in accompliance with all European regulations.