Specially designed for bore gages. The minimum value tracking function can find the diameter automatically. Read the diameter directly, after imputing the size of setting ring. Reading in digit and analog. Display can be rotated by 320º. Button function: minimum value tracking, calibration, data preset, inch/metric conversion, absolute/incremental measurement. CR2032 battery, automatic power off. Data output. Optional accessory: data output cable (code 7306-40, 7302-SPC3A, 7305-SPC1A), backs (page 101), contact points (page 98~100).