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 0-8" range and .001" graduations, in Fitted Case FAST MEASURING: The Starrett Dial Caliper provides precise measurement of outside dimensions (OD), inside dimensions (ID), and depth. RANGE: This series features a 0 8 inch range, 0.001 inch dial graduation, and one revolution equivalent to 0.100 inch. FEATURES: This model Description sharp, clear dial graduations, black graduations on satin finished bar, lock screws for sliding jaw, and dial bezel which is adjustable VERSATILE: 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 EASY OPERATION: It has a thumb-operated fine adjustment roll, knife-edge contacts, and positive spring-loaded, double pinion, anti-backlash control SPECIFICATIONS Range (in): 0-8" Graduations (in): .001" Revolution Range (in): .100" Bar Graduations: .100" Construction Material: Stainless Steel Dial Color: White Inside Jaw Depth (in): 5/8" Outside Jaw Depth (in): 1-1/2" Case Type: Plastic Accuracy (in): 0-6" (+/-.001") 6-8" (+/-.0015") [/custom1]