Page 3 - H-PrecisionInstruments.indd

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PRECISION INSTRUMENTS

MAGNETIC BASE ADJUSTABLE PARALLELS A
INDICATOR HOLDER B
C
657AA 3/8 to 2-1/4 Inch D
E
For use with all Starrett Test, 9.5 to 57 mm (Metric) F
AGD, Dial and Miniature-Dial G
Indicators. Also accommodates 154 Series H
similar indicators of other manu- I
facturers. Powerful, permanent Starrett adjustable parallels provide a wide range of use in layout, J
magnetic base holds firmly to gaging, inspection work and for setups on various machine tools. K
steel or iron surfaces-horizontally, Their adjustable feature makes it possible to adjust them to exact L
vertically, upside-down. Push size by micrometer measurement and also permits use in place of M
button turns magnetic force on or several solid-type parallels. These parallels are useful as gages in N
off for quick, one-hand set-up and checking the size of slots and openings. They are also convenient O
take-down. V-step adapts base for use in machine vises, for leveling or adjusting work on setups P
to horizontal or vertical arbors of milling and grinding machines, shapers, planers, drill presses
and chucks. There is an extra and for many other applications. Parallels slide smoothly and
1/4-20 NC tapped hole in the can be easily adjusted. The smaller sizes A, B, and C are locked
side of the base for the indicator by one screw while the larger sizes, D, E, and F, have two lock
mounting post. Three precision screws. All parallels are 9/32” (7mm) thick.
ground magnetic contact surfaces (plus V-step). Black wrinkle
finish on non-working surfaces. Range Length Catalog EDP
# #
Attchments Include: Inch mm Inch mm
A. No. 657P Magnetic Base. 1 15/16 x 1 5/8 x 1 7/8” (50 x 40 154A 50578
x 48 mm). Push-button on/off switch for one-hand operation. 3/8-1/2 9.5-12.7 1-3/4 45 154B 50579
Base has three precision ground, magnetic contact points. Grips 154C 50580
horizontally, vertically, and upside down. V-step holds base to 1/2-11/16 12.7-17.5 2-1/8 55 154D 50581
arbors, shafts, etc. Base has extra 1/4-20 tapped hole on one 154E 50582
side for mounting post. Black wrinkle finish on non-working sur- 11/16-15/16 17.5-24 2-11/16 70 154F 50583
faces.
15/16-1-5/16 24-33 3-9/16 90
B. No. 657G Upright Base Post. 3/8” (9.5 mm) diameter x 7
7/16” (190 mm) length overall. Starrett No. 57S and No. 58S 1-5/16-1-3/4 33-44 4-3/16 105
Universal Snugs may also be used.
1-3/4-2-1/4 44-57 5-1/16 130
C. No. 657S Snug. Two 1/4” (6.3 mm) diameter holes. Adapts
Nos. 196, 650, and 651 Series Dial Indicators and No. 657Y In- Product # - 355527
dicator Attachment to No. 657X Rod.
Mfg. # - S154LZ - Set of 6 Parallels - sizes A, B, C, D, E, F - in
D. No. 657X Rod. 1/4” (6.3 mm) diameter x 6” (150 mm) long. Case; Catalog # S154LZ; EDP # 50586
Accommodates Starrett Nos. 708, 709, 811 and 711F Series Dial
Test Indicators and No. 657S Sleeve.

E. No. 657Y Indicator Attachment. 1/4” (6.3 mm) O.D. one
end, other end threaded and fits lug backs of all AGD indicators
(Starrett Series Nos. 81, 25, 655, 656) and Series No. 80 Minia-
ture Indicators.

F. No. PT18724 Snug 3/8” (9.5 mm) diameter post hole. 1/4”
(6.3 mm) diameter gripping hole accommodates No. 657X Rod.

Product # - 355513

Mfg. #. - 657AA - EDP No. - 52743 - Magnetic Base w/All At-
tachments

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August 31, 2009