Resolution: .0005″/0.01mm.
Measure groove diameter.
Buttons: on/off, set, inch/mm, preset (+, -).
Automatic power off, move the digital unit to turn on power.
Battery CR2032. Data output.
Made of stainless steel.
Optional accessory: depth stop (part no. 6143), data output cable

Insize 9246-180, DIGITAL MULTIMETER (WITH JACK INDICATOR LIGHT), 6940561968798
3M 28476, Disc pad Hub, 2-1/2 in 5/8-11 Internal Low Profile, 7000045288 