What is it? Is it a roulette or simply a piece of mechanical ingenuity? Nobody knows exactly, but it does have a name: the dynamometer. Blow on the upper impeller and you put the whole system in motion. The arrow on the front jumps from one icon to another, and will be based on your bladder ability to see what you do today is. It is one of the simplest Ugears models to build but shows clearly the principles of mechanics, a plethora of gears and mechanical connections, the so-called "Geneva train» make this an interesting model in which the effect of mechanics is being faithfully reproduced! Size Model: 147 x 72 x 170 mm.
This model consists of 48 parts and without glue or tools are put together!