Magnetic Base 0.0005" Test Indicator and 0.001" Dial Indicator New 1 Base 2 Indicators 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"