Numerical Scale

Inspired by Gyrobot's Seesaw Maths http://www.thingiverse.com/thing:182549 (miniland educational http://www.minilandeducational.com/en/numerical-scales/) and based on kids feedback I designed a new version. The counters are the same (I just copied the STL-file to complete the set) and the base is similar but the seesaw is splitted into several pluggable items.

This design makes it possible to print the items on a small 3D Printer or to increase the dimensions, it should also be easy to print.