Measure accurately and instantly to within a thousandth of an inch! This compact gauge includes a digital readout in metric or imperial as well as a steel rule. Measures from 0 to 3. 2" (0-83mm). Perfect for measuring the height of router bits and saw blades, or measuring for placement of a dado with greater accuracy. Magnetic feet make the gauge self-standing for setting the cutter depth on router tables and it has a low profile for back fence adjustments. Switches between the ABS (preset) and INC (zero set) measurement modes for total accuracy.