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 77779 4-1/2" Dia. x 7/8" Center Hole, 16 Grit, Silicon Carbide, DynaCut Disc, 5/box
Dynabrade 11846 Contact Wheel, 2" Dia. x 2" W x 1-1/8" I.D., Standard Face, 70 Duro Urethane
Dynabrade 98285 Spring
3M 14215, Roloc Disc Pad TS and TSM, Medium 3 in 1/4-20 Internal, 7000119310 