Microjig Fitfinder 1/2 Gauge helps you create ly fitting joints, set fences, and transfer cutting depths without any math or measuring. This innovative tool uses geometry to quickly find the half thickness of materials up to 3 inches in just seconds. Simply lock the measurement in place, then set the cutting depth of your saw blade or router bit, or adjust fences with ease. It’s designed to make your woodworking projects more precise and efficient, saving you time and effort. Model Number: FN12