Indica tor Backs AGD Dial Indicator Backs Part No. EDP Dimensions Type Fits Starrett Indicator Models A B C D in mm in mm in mm in mm PT06836-1 70856 5/8 16 1/4 6.3 1/4 6.3 1/2 12.7 Lug-On-Center* 81 PT07206-1 70960 15/32 12 25, 2600 PT06966-1 70888 7/16 11 655 PT07317-1 70980 27/64 10.7 656 PT06836 70855 5/8 16 1/4 6.3 1/4 6.3 1/2 12.7 Lug-Off-Center** 81 PT06608-1 70770 15/32 12 25, 2600 PT06966A 71996 7/16 11 655 PT07317A 71997 27/64 10.7 656 PT06836M 70859 1/4 6.3 7/8 22 1/8 3 1/2 12.7 Adjustable Bracket (#1/4-20 Thread)† 81 PT06608M 70776 1/4 6.3 1-1/4 32 1/8 3 1/2 12.7 Adjustable Bracket (#1/4-20 Thread)† 25, 2600 PT06878M 70874 655 PT06903M 70882 656 PT24074 72482 1/2 12.7 5/8 16 Screw-Type Lug (#1/4-20 Thread)† 81 PT24076 72483 25, 2600 PT24078 72484 655 PT24080 72485 656 PT06836S 72223 1/2 12.7 5/8 16 Screw-Type Lug (#3/8-24 Thread)† 81 PT06608E 70772 25, 2600 PT06878E 72224 655 PT06903E 72225 656 PT24073 72486 1/2 12.7 5/8 16 Screw-Type Lug (#1/4-28 Thread)† 81 PT24075 72487 25, 2600 PT24077 72488 655 PT24079 72489 656 PT06836F 70857 1-1/4 32 1/2 12.7 Post-Type Lug† 81 PT06608F 70773 25, 2600 PT06878F 71992 655 PT06903F 71994 656 PT06836J 70858 Flat** 81 PT06608J 70774 25, 2600 PT06878J 70873 655 PT06903J 71995 656 PT24921 67295 Flat (Plastic) 81 PT26160 67405 25, 2600 * Regularly furnished on all listed indicators at no extra charge. ** When specified, available on all listed indicators at no extra charge. † When specified, available at extra charge on all listed indicators. Backs for special requirements are also available; priced on application. Lug-On-Center Lug-Off-Center Adjustable Bracket Screw-Type Lug Post-Type Lug Flat 161 starrett.com I ndica tors and G ages