Equipped with Heidenhain optical scale, 415 Series Electronic Automatic Adjustable Setting Masters set wide variety of ID and OD measuring instruments without requiring use of ID ring, OD disc, or gauge blocks. Sizes can be set by typing in exact value, which only takes seconds. Units feature ceramic reference pads, electronic LCD, and ability to store up to 100 preset positions to set most common gauges. Data can be stored via USB port and remote PC control is possible.