The Clarke 6in. Digital Vernier Caliper has a zero setting button to allow for instant calibrations. Locking knob with micro thumbwheel allows for quick, precise measurements. Precision engineered from high-grade stainless steel. Clarke precision measuring tools deliver precise, accurate, reliable measurements every time. Caliper Type: Vernier, Jaw Size (in.): 1, Length (in.): 6, Measures: SAE & metric, Range (in.(mm)): 6 in. (150mm), Capacity: 6in., Display Type: Digital, Material: Stainless steel, Single, Pair, or Set: Single, Case Included: Yes Accurate to ± 0.001in. Easy-to-read LCD screen with one-touch conversion from SAE to metric 6in. jaw capacity Includes battery and nylon carrying case