Digital calipers don't have any rack/pinion/gear system. This makes them more shock-proof which we like (since we're a little clumsy and have dropped the calipers a few times).Digital calipers can also easily convert from inches to mm and back which we really like since a lot of electronics is mixed-units. It is really easy to read a digital vernier caliper manufacturers china.
The display is turned on with the on/off button. The external jaws should then be brought together until they touch and the zero button should be pressed. The digital caliper can then be used to measure distances. Always go through this procedure when turning on the display for the first time.
