657AA Starrett Magnetic Base with Attachments
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Starrett Magnetic Base Indicator Holder
For use with all Starrett Test, Back-Plunger, AGD, Dial and Miniature-
Dial Indicators. Also accommodates similar indicators of other
- 657P Magnetic Base. 1-15/16 x 1-5/8 x 1-7/8" (50
x 40 x
48mm). Push-button on/off switch for one-hand operation.
Base has three precision ground magnetic contact points. Grips
horizontally, vertically, and upside down. V-step holds base to
arbors, shafts, etc. Base has extra 1/4-20 tapped hole on one side
for mounting post. Black wrinkle ﬁnish on non-working surfaces .
- 657G Upright Base Post. 3/8" (9.5mm)
diameter x 7-7/16"
(190mm) length overall. Starrett 57S and 58S Universal Snugs
may also be used.
- 657S Snug. Two 1/4" (6.3mm) diameter holes. Adapts
and 651 Series Dial Indicators and 657Y Indicator Attachment to
- 657X Rod. 1/4" (6.3mm) diameter x 6" (150mm)
Accommodates Starrett 708, 709, 811 and 711F Series Dial Test
Indicators and 657S Sleeve.
- 657Y Indicator Attachment.
1/4" (6.3mm) O.D. one end, other end
threaded and ﬁts lug backs of all AGD indicators (Starrett Series
25, 655, 656) and Series 80 Miniature Indicators.
- PT18724 Snug 3/8" (9.5mm)
diameter post hole. 1/4" (6.3mm)
diameter gripping hole accommodates 657X Rod.