Resolution .00005″/0.001mm.
IP54 dust/waterproof.
Buttons: on/off, set, inch/mm, ABS/INC.
Data output. LR44 battery, automatic power off.
Carbide measuring faces. Ratchet stop.
Supplied with extension rods.
Setting rings are included (except part no. 3128-12).

Dynabrade 25231 Gear Set 1.473: 1 Ratio, 1.3 hp
Dynabrade 78292 2" Dia. x 6A M Medium Type R Unitized Locking-Type Disc, 25/pack
Dynabrade 18570 Vane Set (4pk)
Dynabrade 15336 Rubber Drive Wheel
Dynabrade 54972 Vane Set (5pk) 