Covered rack for longer life and chip free operation. 4-way measurement for outside, inside, depth and step. Adjustable dial for easy reading. One revolution. Positive lock. Fitted case. Meets DIN 862.
Batteries are not required, very accurate measurements. It has been used with great success. As long as you take care of them, they will last a very long time and continue to take extremely accurate measurements.
These calipers are about the same price as the freight haul ones but much better. I use them for work and they need to be calibrated. The toolbox guy who does all our calibration said it was a decent caliper.
I have been a mechanic in the aerospace industry for 14 years and would not dream of using this caliper. Not exactly at all and not repetitive but I think you pay for what you get. Very disappointed with this product.