SPI Spindle Square with Indicators 3/8’ Shank Tramming Tool 20-910-6

Description

SPI (Swiss Precision Instruments) Standard Inch Model Spindle Square.
A simple solution to squaring your machine. Just zero indicators on a flat surface, install in milling machine spindle, bring the spindle down to the table and adjust the head until both indicators read the same.
3/8 inch shank.
4 inches between the indicator contact points.
0.001 in. Graduation.
Fully assembled with indicators mounted and ready for use.
No more tramming or split reading, compensating for loose, worn gears or mirrors.
Can also be used with a sine bar or protractor to set angle.
Constructed of steel with precision ground contact points for durability and accuracy.
Comes furnished in a fitted case.