Toledo Inside Caliper 100mm TCW810N Accessories: Joint Screwdriver 1 4 x XA BLA Accessories: Joint Screwdriver 1 4 x 1 4 Inch Adaptor 1 4 Inch Sockets: 4 5 5 2in extension bar 51100 Toledo inside Caliper 100mm Toledo inside spring calipers are designed for reliable quick and accurate measurements during layout procedures and jobs Manufactured in Japan to strict standards to ensure accuracy and precision Legs pivot on a roller and are tensioned via bow spring Manufactured from stainless steel and feature a spring joint via a solid screw nut Solid nut requires progressive twisting to wind in and out via the threaded tension bar Made in Japan