The Mitutoyo ABSOLUTE 500 series caliper is a Digimatic digital caliper that is made of durable hardened stainless steel and uses MitutoyoÆs ABSOLUTE linear encoder technology, which allows you to ôset and forgetö the origin and measure in awkward or difficult locations. This digital caliper has LCD readout and function control buttons on the caliper face, including Origin to set and retain the original measuring point, On/Off to automatically shut off the caliper after 30 minutes, and Zero/ABS (Absolute Scale) to zero-set the LCD display. It uses the metric measuring system.