- These calipers are made of hardened steel or stainless steel and are appropriate for most general purpose and heavy duty applications.- They have a graduated dial that displays metric measurements with 0.01mm or 0.02mm graduations. - Dial calipers use adjustable jaws that slide along a beam to measure between two opposite sides of a tool or part.- They are easier to read than vernier calipers and are commonly used in light and heavy manufacturing production, and in machine and woodworking shops. Range / 0 to 150 mm Accuracy / +/-0.03 mm Caliper Material / Stainless Steel Dial Color / Yellow Dial Graduation / 0.02 mm Dimension Type / Metric Jaw Actuation Type / Thumb Wheel Jaw Depth / 40 mm Jaw Material / Stainless Steel Maximum Measurement - mm / 150 mm Measurements / 4-Way Measures Depth / Yes Measures Inside Dimension / Yes Measures Outside Dimension / Yes Measures Step / Yes Minimum Measurement - mm / 0 mm Case Type / Plastic Depth Rod Shape / Rectangular Included Certification / Inspection Certificate Includes Bezel Lock / Yes Includes Case / Yes Includes Locking Nut / Yes Jaw Depth - Upper Jaw / 21 mm Jaw Shape / Standard Blade Range per Revolution / 2 mm Shockproof Dial / Yes Standards / US Federal Specifications