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 19771, Utility Cloth Sheet 314D, 9 in x 11 in P100 J-weight, 7000021272
3M 87500, High Intensity Grade Prismatic Reflective Sheeting 3930DS, White, Digital Printing, 48 in x 50 yd, 7100088231
Standard Abrasives 703470, A/O Tapered Cone Point, K-110 240, 7100166327, 100 per case 