• Hammertone blue baked enamel frame • Anvil and spindle are carbide tipped and precision ground with microlap finish on ends • Microfine graduations (.0001"/.001mm) on satin chrome finish for easy reading • Spindle thread hardened, ground & lapped. • Quick, easy zero adjustment on sleeve • The radius of the measuring points is approximately .012" • All models feature a ratchet stop thimble for exact and repetitive readings • Positive lever locking clamp • Includes wrench and case