8 Inch Spring Calipers Set, High Quality Precision Tools. Made of High Quality Carbon Steel with Chrome-plated Surface Features: * High quality precision Tools * Set included divider, inside calipers and outside calipers. * Basic calipers used to transfer marks and set depths. * Calipers measuring tool great for wood turning lathe projects. * The forged steel legs feature hardened points for precise marking of the work piece. * An adjusting screw has a self-seating washer and nut to permit quick and positive adjustment. Specifications: Material: Carbon Steel Size: Outside caliper: 23.1cm/9.1 inch (approximately) Inside caliper: 22.2cm/8.7 inch(approximately) Inside divider: 24.5/9.6 inch(approximately) Package included: 1x Spring Outside Caliper 1 x Spring Inside Caliper 1x Inside Divider SIZE OF CALIPER SET: Our wood turning calipers made from high quality carbon steel; Package included 8 inch Outside Caliper, 8 inch Inside Caliper and 8 inch Divider; 8 inch size makes you measure more distances at a time RUST PREVENTION: We use chorme plate material to make outside calipers surface to ensure that it can work longer without corrosion and rust DESIGN: Spring caliper set is working with round stock or oddly shaped materials and then transferring that measurement to a ruler; The inside caliper is great for gauging the inner diameter of an opening and then transferring that measurement to a ruler DIVIDER CALIPER: A useful calipers measuring tool for uneven surfaces, great for many uses such as tracing contours and scribing circles into metal PRECISE MEASURE: The forged steel legs feature hardened points for precise marking of the work piece, precise fine adjustment due to solid nut; Works perfect for wood turning lathe projects