The spindle and anvil have flat, micro-lapped measuring faces for accuracy and are carbide-tipped for wear resistance. Carbide Tip Micrometer Starrett 226RL-6 Outside Micrometer 5-6" Range .001" Graduation - Ideal 0.001 Inch Graduation Micrometer The Vernier scale on the thimble and sleeve is graduated to 0., 001” with a satin chrome rust- and glare-resistant finish. Depth micrometers measure the height or depth, of any shape that has a step, groove or slot., The L., S. Knurled friction thimble helps provide quick adjustment capability Vernier scale in inch units for taking precise outside diameter (OD) measurements The micrometer’s frame has a baked enamel finish for protection and durability. Inside micrometers are typically used to measure interior diameter, as in a hole. Micrometers are precision measuring instruments that use a calibrated screw to measure small distances. Buy Starrett 226RL-3 Outside Micrometer, Ratchet Stop, Lock Nut, 2-3" Range, 0.001" Graduation, /-0.0001" Accuracy at UK. Free delivery on eligible orders For craftsmen who want a precision micrometer with a distinctive Starrett design and finish Strong ribbed frame with smooth black enamel finish and polished steel ribs and hub Baked enamel finish for protection and durability of frame Starrett 226RL-3 2 - 3 X 0.001 Mechanical Outside Micrometer Starrett Str226rl 3 Outside micrometers may also be called micrometer callipers and are used to measure the length, width or outside diameter of an object. Micro-lapped carbide measuring faces help provide accuracy and wear resistance