Starrett 657TW Magnetic Base With Flex O Post Assembly And Fine Adjustment Attachment

Adjusting take up sleeve with locking nut for maintaining proper degree of post rigidity Post snug has 3/8"hole (which will also grip AGD dial indicators by the stem) Locking lever tightens internal steel cable to make post rigid and lock it in position Magnetic base number 657P has pushbutton on/off switch Flex-O-Post includes adjusting take-up sleeve, post snug, locking Lever, magnetic base