Fowler Dial Caliper Specifications Include.... 0-6" Measuring Range 0.001" Graduations + 0.001" Accuracy 0.100 Range Per Revolution Features Include... Thumb roll for rapid setting Beam graduations: .100" Four-way jaw for outside, inside, depth and step measurements Hardened stainless steel throughout with measuring faces precision ground and microlapped for exceptional accuracy Knurled lock assures precise settings Adjustable dial Scale surface is satin chrome finished to prevent glare, reduces operator fatigue; microfine graduations read in inches Includes case