657T Starrett Magnetic Base with Flex O-Post Assembly

657T
Starrett Flex-O-Post Indicator Holder with magnetic base

For use with all Starrett Test, Back-Plunger, AGD, Dial, and Miniature
Dial Indicators . Also accommodates similar indicators of other
manufacturers . The flexible post is an assembly of short tubular steel
sections and precision ball joints, linked by an internal steel cable . It
can be adjusted to any position and locked by turning a lever near the
magnetic base . This makes it possible to use indicators in awkward
places that are hard to reach with conventional holding devices .
Assembled to the magnetic base, the post has a vertical reach of
approximately 15″ (380mm) and a horizontal reach of approximately
10″ (250mm) . The indicator snug on the end of the post can be rotated
through 360º and locked in any position .
The base has three precision ground magnetic contact surfaces . Grips
horizontally, vertically or upside down . V-step holds base to arbors,
shafts, chucks .
The 657W Attachment allows fine adjustments to be made, operated
by turning the fine-adjusting thumb screw (with post locked in rigid
position) to zero, then set the indicator .

• A . Gage Rod 3/8″ x 3″ (9 .5mm x 75mm) has 5/16, 1/4 and 7/32″
  (8, 6 .3, and 5 .5mm) steps . Holds 708, 709, 711 and 811 Dial Test
  Indicators by body clamp . See attachment specifications for the
  appropriate indicator body clamp on previous pages .
• B . Adjusting Take-up Sleeve with locking nut for maintaining proper
  degree of post rigidity .
• C . Post Snug has 3/8″ (9 .5mm) hole (which will also grip AGD dial
  indicators by the stem) .
• D . Flex-O-Post 657U .
  E . Locking Lever tightens internal steel cable to make post rigid and
  lock it in position .
• F . Magnetic Base 657P has push-button on/off switch .