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 65491, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5220TRI-10I, 5 inch UH, 220, 7100202878, 10 per pack
Insize 4634-1B18, NPT THREAD RING GAGE, 1/4x18NPT, 6928640346965
3M 30204, Disposable Plastic Wheel Maskers, X-Large, 125 per box, 7000125076
3M 20230, Scotch-Seal Metal Sealant 2084, Silver, 5 Gallon Drum (Pail), 7000046344
3M 26583, Accuspray Refill Pack for PPS Series 2.0, Green, 1.3 mm, 7100152953 