SPI 20-910-6 Spindle Square: Standard Inch Model, 3/8" Shank, 0.001" Graduation
- 3/8-inch shank
- Fully assembled with indicators mounted and ready to 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; Includes fitted case