Starrett® 657A

The Starrett 657A Magnetic Base Indicator Holder includes a swivel post assembly that provides universal adjustment in both horizontal and vertical planes. Available with inch or millimeter Starrett Dial Test or Back-Plunger Indicators, they save time in shop set-up and other inspection jobs.

• Series 657
• Magnetic Pull 100 lb
• Base Size 1-57/64 in L x 1-5/8 in W x 1-29/32 in H
• Overall Length 7-19/32 in
• Rod Diameter 17/64 in
• Upright Post Diameter 3/4 in
• Thread Size 1/4-20
• Switch Type Pushbutton On/Off
• Finish Black Wrinkle

• 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
• Black wrinkle finish on non-working surfaces
• Push button turns magnetic force on or off for quick, one-hand set up and take-down
• V-step adapts base to horizontal or vertical arbors and chucks
• 5/16 in Dia x 2 in L arm
• For use with all Starrett® test, back-plunger, AGD, dial and miniature dial indicators