Curvimeter - STEM 3D wooden puzzle UGEARS - UG-70138

STEM Ugears Curvimeter

There is no reliable source on the actual inventor of the curvimeter. Some sources attribute its invention to the Roman engineer Virtuvius, who described a very similar device around 23 BC. Others refer to a Chinese scholar, Zhang Heng. Russian sources suggest the curvimeter was invented by the polymath Mikhail Lomonosov, who likely initially called it "krivimetr." Overall, the first official patent for a curvimeter belongs to the English engineer Edward Russell Morris, who, in 1873, registered "a new apparatus for measuring distances."

A curvimeter is used to measure the length of curved lines on topographic maps, graphs, diagrams, and plans. It is a tool commonly used by cartographers, tourists, and road services. The curvimeter mechanism consists of:
– Measuring wheel with main and additional scales, and a needle.
– Planetary mechanism.
– Cycloidal training.

Self-assembly required, no glue needed.

Dimensions: 11.5 x 10.3 x 5.7 cm
Number of pieces: 109

Assembly: 1 to 2 hours