A free program for Android, by Computational Lab..

Caliper Digital is an educational game designed to help users understand and learn how to read Vernier Caliper. The game consists of several levels that will test the user’s ability to measure and calculate lengths.

How to play the game:

You will be presented with a series of tasks. Every task will have one or more objects to be measured. You must use the digital display to measure the length of the objects and then calculate the results. You will be given the answers and will need to input them on the answer button. 

This game is designed to be educational and fun, and to help users understand the basics of mathematics and measurement.