uGears Mechanical 20 minute Timer Wooden Mechanical Model 3D Puzzle Ne
Number of parts: 107 Assembly time: 1-3 hours Level: Intermediate Model size: 17.3*8*25.6 cm One of UGEARS more beautiful (and functional!) models, our Timer is a top of the range model. It can be set for any duration between 1 and 20 minutes. The Timer has a working wind up alarm mechanism that will be set off when time runs out. Once built, the Timer has a unique roller pendulum and amplitude adjustment system on it’s back wall. The same as other UGEARS models, the Timer works thanks to a