/ Precision Measuring Tools / Precision Hand Tools / Indicators & Gages / Indicator Accessories / 676-3 * Not actual product image 56649 676-3 Magnetic Back 56649 Other similar products These magnetic backs provide a quick and easy means of attaching any Starrett AGD indicator to flat, ferrous metal surfaces. A real time saver for machine, jig and fixture set up. Requires no clamps, rods or snugs. A special 5/16"-24 threaded stud back is provided to replace the standard lug back. The powerful, permanent magnet is then attached to the threaded stud. Anti-magnetic indicators are not required. Magnetic Back for No. 655 Series The powerful, permanent magnet is then attached to the threaded stud. Anti-magnetic indicators are not required. Features Contact Starrett Features Starrett Indicator backs are well designed All Steel Construction with Magnet