Three precision ground magnetic contact surfaces (plus V-step). Powerful, permanent magnetic base holds firmly to steel or iron surfaces - horizontally, vertically, upside-down. The swivel post assembly on these holders provides universal adjustment in both horizontal and vertical planes. Includes magnetic base, upright post assembly including post, swivel post snug and gage holding rod.
Magnetic Indicator Holder Set. The Starrett 657 Magnetic Indicator Holder Base has three precision ground, magnetic contact surfaces. Grips horizontally, vertically or upside down. V-step holds base to round surfaces. Extra #1/4-20 tapped hole in one side of base (not shown) for mounting post. Available with or without Starrett AGD Dial Indicators: inch reading 25-131J (graduation .0005", dial reading 0-25-0, range .125") or millimeter reading 25-181J (graduation 0.01mm, dial reading 0-50-0, range 2.5mm). Other indicators can be furnished on request. Magnetic Base with 657G/657H/657J.
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