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

Dynabrade 77760 4-1/2" Dia. x 7/8" Center Hole, 120 Grit, Z/A, Type 27, DynaCut Flap Disc W/Fiberglass, 10/pack
3M 26614, Accuspray Atomizing Head Refill Pack for 3M PPS Series 2.0,Orange, 1.4 mm, 7100141417 (4 Nozzles/Kit)
Dynabrade 98269 1/2" Female Coupler
Insize 7230, SCRIBER, 6928640320064
3M 05049, Cloth Belt 384F, 80+ XF-weight, 1 in x 30 in, Fabri-lok, Full-flex, 7100141431, 200 per case
3M 64935, Scotch-Brite Hand Pad 7448 PRO, PO-HP, SiC Ultra Fine, 6 in x 9 in, 7100023340, 20/Carton
Dynabrade 78122 2" Dia. Medium NWN DynaBrite Locking-Type Disc, 25/pack
3M 97421, Aluminum Foil Tape 3380, Silver, 72 mm x 45 m, 3.25 mil, 7010375681 