SPI Cylindrical Master Squares Features:
- Constructed out of a single piece in the form of a cylinder.
- Heat-treated and precision ground.
- Virtually indestructible.
- Squareness .000030″ per inch.
SPI Cylindrical Master Squares (30-546-6)
$188.00
Swiss Precision Instruments (SPI) 6″ x 3-3/16″ Cylindrical Master Squares.
Constructed out of a single piece in the form of a cylinder. Heat-treated and precision ground. Virtually indestructible. Squareness .000030″ per inch.