Feature●Universal Magnetic Base with both 0.001" Dial Indicator and 0.005" Test Indicator●Base has one knob control and Fine adjustment, 10-12" reach.●strong magnetic holding power, 360 swivel, Dovetail and Shank Mount, Single action locking mechanism●1" Travel Dial Indicator: Graduation: 0.001", Reading: 0 - 100●Test Indicator: Accuracy: 0.0005", Range: 0.030"Description