Listed is a never been used, new old stock, Starrett#657A Magnetic Base and Indicator Holder. * Powerful, permanent magnetic base holds firmly to steel or iron surfaces - horizontally, vertically, upside down. * Push-button turns magnet force on or off for quick, one-hand setup and take-down.
Base Width: 3-1/2"Base Height: 1"Base Depth: 1-1/8"*Holding rod is non-magnetic stainless steel set in a hardened universal ball socket.*Magnetic Release.*Thumb screw allows fine minute, precision adjustment.*Other parts are chrome plated or stainless steel.* Holding rod is 6" x 1/4".
*Small bodied magnetic base with powerful holding force.*Base easily mounted on machine tools and work surfaces and simply released by twisting action.*Includes two rods: One used for standard machine shop clamps and measures 5/16", 1/4", and 7/32" O.D. The second rod, 1/4" in diameter with lug is used for standard dial gages and dial test indicators.*Bases with V-groove for placement on round surfaces.*Base dimensions: 1-1/4" x 1-1/4" x 1-5/16". Be sure to add me to your favorites list!
*Medium duty magnetic base with a powerful magnetic pull and quick release lever facilitates easy positioning on a machine tool or work surface.*Base constructed with V-groove for placement on round surfaces.*Includes two rods. One rod holds standard dial gages and dial test indicators. The multi-rod is used with standard gage fixing clamps.*The multi-rod measures 1/4" with 5/16" and 7/32" O.D.
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