Powerful, permanent magnet attaches to the threaded stud
No clamps, rods, or snugs needed
5/16"-24 threaded stud back replaces standard lug back
Anti-magnetic indicators are not required
For attaching to any Starrett AGD indicator to flat ferrous metal surfaces
Meets or exceeds accuracy and performance requirements of national and international standards and are traceable to the National Institute of Standards and Technology.