New Starrett Magnetic Base Post Holder Set + 196MB1 Back Plunger Dial Indicator. Starrett 196MB1 universal dial test indicator. Starrett 657 Magnetic Base and Swivel Post Assembly.
Powerful, permanent magnetic base holds firmly to steel or iron surfaces. Push-button turns magnetic force on or off for quick, one-hand set-up and take-down. _gsrx_vers_1608 GS 9.5 (1608).