Ancient school calculation instrument
€270
Ancient school calculation instrument
€270
Didactic calculation instrument with rotating cylinders patented in Belgium by L. Vandersteegen in Hasselt. It is a historical piece specifically designed for teaching arithmetic in schools in Europe in the mid-20th century. It is in use with some paper defects (see photos). It measures 52.5 cm high X 39 cm wide X 12 cm deep.
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