- All steel construction and American craftsmanship
- Patented Roller Release Mechanism increases reliability and accuracy by eliminating virtually all friction
- Accuracy: 3% of reading Clockwise and Counterclockwise
- Engineered, machined, chromed and assembled in U.S.A since 1938
- Delivered in custom case made in the U.S.A.
Engineered, precision bearing surfaces extend the calibrated life of the M series line to many times the life of competitor's tools.