Specification Brand : HARFINGTON BulletPoint1 : Size - 530mm length x 490mm width spring joint outside caliper with a max open length (capacity) of 20 inch / 500mm. BulletPoint2 : Material - Our metal calipers are forged from stainless iron, with overall heat treatment, wear resistance, durable and long service life. BulletPoint3 : Feature - The forged high-carbon steel legs feature hardened points for precise marking of the workpiece and precise fine adjustment by opening and closing the legs by means of an adjusting nut. BulletPoint4 : Application - Outside caliper is a useful measurement transfer tool for measuring the external size of round stock or irregular shaped objects, and then transferring that measurement to a ruler. BulletPoint5 : Usage - Smooth surface and burr-free, accurate measurement, can be used for a long time and not easy to loosen. ItemName : HARFINGTON Spring Joint Caliper 20 inch / 500mm Steel Spring Outside Caliper with Brass Fulcrum for Wood Turning Lathe Work ItemPackageDimensions_Height : 55.88 centimeters ItemPackageDimensions_Length : 2.54 centimeters ItemPackageDimensions_Width : 15.24 centimeters ItemTypeKeyword : joint-calipers-and-dividers Manufacturer : HARFINGTON Material : Stainless Steel PartNumber : hta230627hh000534 ProductDescription : Our metal calipers are forged from stainless iron, with overall heat treatment, wear resistance, durable and long service life The forged high-carbon steel legs feature hardened points for precise marking of the workpiece and precise fine adjustment by opening and closing the legs by means of an adjusting nut. The outside caliper is a useful measurement transfer tool for measuring the external size of round stock or irregular shaped objects, and then transferring that measurement to a ruler. Smooth surface and burr-free, accurate measurement, can be used for a long time and not easy to loosen.