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

3M 45015, Diamond Grade DG3 Reflective Digital Sheeting 4090UDS, White, 24 in x 50 yd, 1 Roll/Case, 7100282694
Standard Abrasives 701100, A/O Tapered Cone Point, D-40 120, 7010310892, 100 per case 