Starrett universal indicator holder with no.657 magnetic base

• Magnetic base universal indicator holder with triple jointed arm and fine adjustment
• The working area is within a hemisphere having a radius of approximately 12″ (300mm)

The very sensitive fine-adjustment is located on the magnetic base to
eliminate indicator deflection when it is being adjusted.
This versatile
indicator holder has three pivots available for positioning the
indicator where needed.
All pivots are controlled by one tightening
knob.
It will hold with a 3/8″ (9.5mm) stem (such as our No. 25 and Nos.
650 and 651 Series) indicator, any indicator with a standard dovetail
mount (such as our Nos. 708, 709, and 811 Series), any indicator with a
1/4″ (6.3mm) shank (such as our No. 196 Series).
Any indicator with a
3/16″ (4.7mm) shank (such as our Nos. 708, 709, 811 and 711 Series), any
indicator with a body clamp (such as our No. 711 Series).