Resolution: .0005″/0.01mm.
Buttons: on/off, zero, inch/mm, ABS/INC, data hold, TOL, set.
ABS/INC is for absolute and incremental measurement.
TOL is for tolerance measurement.
Carbide tipped scriber.
Made of stainless steel (except the base).
LR44 battery. Data output.

Dynabrade 92594 3-1/2" Dia. x 30 Micron A/O Non-Vacuum Hook-Face Scalloped-Edge DynaCut Disc, 50/Box
Dynabrade 61575 Control board 