Resolution: .0005″/0.01mm.
Measure hole center distance in the same or offset planes.
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.

3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
Dynabrade 78602 1/2" Dia. x 1" W x 1/8" Center Hole, 60 Grit, 100/pack
Insize 4120-14, METRIC THREAD RING GAGE, GO, M14x2, 6928640341489
3M Super Abrasives Roloc Disc, 2" Type-R, Medium AO High Strength, Box of 50
3M 26016, PPS Series 2.0 Adapter, Type S9, 16 mm Male, 1.5 mm Thread, 7100135330 