Details
    Magnetic Base Universal Indicator Holders with Triple-Jointed Arm & Fine-Adjustment
        - Universal Indicator Holder with No. 657 Magnetic Base
 - COMPLETE ASSEMBLIES
 - The working area is within a hemisphere having a radius of approximately 12" (300 mm)
 - The very sensitive fine- adjustment is located on the magnetic base to eliminate indicator deflection when it is being adjusted
 - Model 657-3 Universal Indicator Holder Arm Assembly can also be used on Model 659P Base using Model 659 Thread Adapter, Model PT18318