Product Features

• Works with any indicator with a 3/8 in stem• Works with any indicator with a standard dovetail mount (such as our 708, 709 and 811 series)• Works with any indicator with a 1/4 in shank• Works with any indicator with a 3/16 in shank• Works with any indicator with a body clamp• The working area is within a hemisphere having a radius of approximately 12 in• The very sensitive fine-adjustment is located on the magnetic base to eliminate indicator deflection when it is being adjusted• Versatile indicator holder has three pivots available for positioning the indicator where needed• All pivots are controlled by one tightening knob• The 657-3 universal indicator holder arm assembly can also be used on the 659P base using the 659 thread adaptor, PT18320