Easily convert your dial or digital calipers to a precision depth gauge with this depth gauge attachment. Made from hardened steel and precision ground to a fine finish. Base is 2.95" long by .235" thick and .985" tall. Set screw securely lock caliper arm in place, NOTE: this attachment will not fit all brands of calipers and will only work with caliper arms that are .585" to  .645" wide. Guaranteed to fit Starrett, Mitutoyo, Brown and Sharp and Taytools 6" and 8" calipers. Calipers in pics 1 and 4 not included. 

WARNING: Cancer and Reproductive Harm -