Take the guesswork out of setting up those critical bevel cuts on your table saw, jointer, bandsaw or drill press table. Just set the unit on a flat reference surface, press the ZERO button to calibrate the display then attach it to the saw blade, fence, etc. and precisely adjust to the desired angle. The Angle Cube offering 0.2 degree accuracy with a resolution of 0.05 degrees at a range of 90 degrees. The large LCD screen makes it easy to read while strong magnets hold the unit to any steel or cast iron surface. Spare battery included, measures 2 3/8 Inch x 2 3/8 Inch x 1 3/8 Inch.