Check the listing for details. Microjig FitFinder 1/2 Gauge. Color: Yellow, Condition: New. Listed at 46.98 USD. Microjig FitFinder 1/2 Gauge, 172557, Allow user to find the exact center of their stock with no measuring and no math, Indicates the midpoint of pieces up to 3" thick, Molded from High Impact ABS Plastic, Once locked in place, this gauge can then be used to set saw blade or router bit height, as well as set fence distance for perfect fitting joints, The FITFINDER™ 1/2 Gauge from Microjig® will allow users to find the exact center of their stock with no measuring and no math. Setting one leg of the fixture on a workpiece causes the adjacent leg to automatically adjust to 1/2 the thickness with zero guesswork. Once locked in place, this gauge can then be used to set saw blade or router bit height, as well as set fence distance for perfect fitting joints.