Moore & Wright 10-16098 Ball V-Block Pairs 3¾" x 3¾" x 2¾"

Enables you to inspect and detect out-of-round conditions and lobes with no damage to parts and no damage to blocks.
• Accuracy of Ball 25 millionth of an inch sphericity on small and medium, 50 millionth of an inch on the large set.
• Overall accuracy of matched pairs +/- 0.0002".
• Class 40 cast iron used on base and housing, is heat stabilised and seasoned.