The "Stretch Checker" was designed so you always have the perfect brace on your bow. It does not measure brace height in the traditional manner at the grip. Simply nock the Stretch Checker like you would your arrow and adjust the non scratch nylon bolt until it just clears the bow. Lock the nut down and you never have to try and remember your brace height again. There is even a spot on the Stretch Checker to write the bow model.