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IndIcAtor Holders

657t flex-o-post IndIcAtor Holders 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 651B1 Indicator gripped
a horizontal reach of approximately 10" (250mm). The indicator snug on the end of the post can be directly to its stem via the
rotated through 360º and locked in any position. post snug. IndIca tors and GaGes
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. 196B1 Indicator via
C. Post Snug has 3/8" (9.5mm) hole (which will also grip AGD dial indicators by the stem). a 657S Snug.
D. Flex-O-Post 3657U.
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.

657T Flex-O-Post Indicator Holders with magnetic base - Individual
Components
Photo Key Cat. No. EDP Description
F 657P 52757 Magnetic Base Only B
(A, B, C, D, E) 3657U 12695 Flex-O-Post with Locking Lever and Snug Only
G 657W 52763 Fine-Adjustment Attachment
A PT17850 72400 Indicator Holding Rod
657T Flex-O-Post Indicator Holders with magnetic base - Complete
Assemblies
Cat. No. EDP Description
657T 52760 Magnetic Base with Flex-O-Post Assembly
Magnetic Base with Flex-O-Post Assembly and Fine-
657TW 52761
Adjustment Attachment C
D
A

G
E

F

657W Fine-Adjustment
Attachment

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