Outside Firm-Joint Caliper, Range 0.037 to 12 in/1 to 300 mm, Joint Type Firm, Maximum Measurement 300 mm, 12 in, Maximum Measurement - Inch 12 in, Maximum Measurement - mm 300 mm, Minimum Measurement - Inch 0.037 in, Minimum Measurement - mm 1 mm, Nut Type Solid, Caliper Material Steel, Leg Style Flat