These calipers are used by mechanics and toolmakers everywhere. Features include direct reading,The Starrett 3202 Series Dial Calipers provide quick, accurate measurements of outside dimensions, inside dimensions, and depth. The dial caliper is the most versatile precision hand tool on the market and has been the first choice of metal working professionals for decades. This series features 0-12" range and .001" graduations, in Fitted Case ease-of-handling, reliability and accuracy making these one of the handiest measuring tools available.FEATURES Provides quick, accurate measurement of O.D., I.D. and depth Sharp, clear dial graduations Sharp, black graduations on satin finished bar Lock screws for sliding jaw and dial bezel Adjustable bezel Thumb-operated fine adjustment roll Hardened stainless steel bar, measuring surfaces, rack, gears and depth rod Knife-edge contacts Positive, spring-loaded double pinion anti-backlash controlSPECIFICATIONS Range (in): 0-12" Graduations (in): .001" Revolution Range (in): .100" Bar Graduations: .100" Construction Material: Stainless Steel Dial Color: White Inside Jaw Depth (in): 3/4" Outside Jaw Depth (in): 2-1/2" Case Type: Plastic Accuracy (in): 0-6" (+/-.001") 6-12" (+/-.0015")