Assemble the Tachometer model kit and discover how it works.
The model kit comes with a QR-code to the study guide about the mechanism, the principal of its working, the main characteristics, and formulas. It also includes interesting assignments.
Dive into augmented reality and look at how the Tachometer works. Interact with the model via a special AR application from Ugears.
Learn how the Tachometer works 

A tachometer is a device designed to measure the rotational speed of various parts in engines and other mechanisms. It calculates revolutions per minute (RPM). The tachometer also measures and monitors load limits, in order to decrease or increase RPM so that the engine or mechanism runs within its optimal parameters.

Specifications:
Model Size: 9.4 x 4.1 x 4.8 in
Package size: 8.1 x 7.4 x 2.5 in
Number of parts: 133
Level: Easy
Assembly Time: 2 hours
Recommended Age: 8
Kit weight: 0.94 lbs
Manufacturer: UGears