0-1" Outside Micrometer : For accurate 0.01" measurements up to 1", simply place item between Micrometer anvil and spindle and tighten - add barrel reading to thimble reading for total thickness: Built in standard force, fixed tension adjustment knob for deformable material and lever lock for retaining selected measurements. Satin chrome steel barrel, thimble and knurled knobs; hardened, precision-ground steel anvil and spindle. 6-3/8" OAL, weighs 7 oz. 5-5/8"L x 2-1/2"W x 1-1/8"H padded plastic case and wrench included. Imported.