One counter reads in the plus direction and another in the minus directiion, so incremental measurement can be made in either direction
Carbide tipped scriber
Made of stainless steel (except the base).
With driving wheel. With dial test indicator holder.
Supplied with dust cover
Optional accessory: clamp for protracotors (code 2372-CLAMP)

Dynabrade 31935 1" to 1-1/4" Vacuum Whip Hose 4" Long w/Swivel Adaptor
Air Turbine Tools 206XSV - 1/4" Straight Hand Tool Series, 50,000 RPM, 42989
Air Turbine Tools 202SV - 3mm Straight Hand Tool Series, 30,000 RPM, 32231 
