ABS System: As soon as the caliper is opened, it gives the measure at the position it is left. There is no need to reset again. Thanks to this system, also the errors resulting from fast movements are also eliminated.
ZERO/ABS Key: It provides reset at any position. Also, it provides the turn to absolute zero (the position that jaws are closed) measurement values. Inch/Metric Conversion - Thumb Wheel – Plastic Box.