Ugears STEM Lab Calculator

Find out how the mechanical counter and mechanical multiplier works
The STEM Lab Calculator is a compact calculator that works by moving gear racks using a pin that is included. By moving the sliders, marked with arrows and numbers from 0 to 9, you can add and/or subtract numbers. The mechanical multiplier is a flat hinge mechanism that performs binary operations on numbers. Moving the double slider will multiply numbers from 1 to 12.

Who invented the mechanical math kit and mechanical multiplier, and when?
The UGEARS Mechanical rekenkit is a DIY wooden model kit based on a math kit invented in 1846 by a Saint Petersburg music teacher, Heinrich Kummer. Its simple design and compact size made it a popular mathematical tool in its day.

 
The STEM Lab collection is intended to introduce children to science in a playful way. All products from the STEM Lab collection are therefore very educational and contribute to de development of your children.