Use this handy tool to make precise adjustments to your table saw, bandsaw, jointer, drill press and your router. It's especially useful to check blade alignment and table saw runout. The extension arm has a spring loaded pivot point that attaches to the arm of the dial indicator. The powerful magnetic base has an on/off switch and fastens securely to any metal surface. The heart of this system is a 0" - 1" digital indicator that displays in inches, metric & fractions with a guaranteed accuracy of 0.001" / 0.01mm. Includes our sturdy carry case.