Magnetic Base Indicator Holder No. 657AA For use with all Starrett Test, Back-Plunger AGD, Dial and Miniature-Dial Indicators. Also accommodates similar indicators of other manufacturers. A. No. 657P Magnetic Base. 1.15/16 x 1 . 5 / 8 x 1 . 7 / 8 ” ( 5 0 x 4 0 x 4 8 m m ) . 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. 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 Universal Snugs may also be used. C. No. 657S Snug. Two 1/4”(6.3mm) diameter holes. Adapts Nos. 196, 650, and 651 Series Dial Indicators and No. 657Y Indicator Attachment to No. 657X Rod. D. No. 657X Rod. 1/4” (6.3 mm) diameter x 6” (150 mm) long. Accommodates Starrett Nos. 708, 709, 811 and 711F Series Dial Test Indicators and No. 657S Sleeve. Flex-O-Post No. 657T Series For use with all Starrett Test, Back-Plunger, AGD, Dial, and Miniature Dial Indicators. Also accomodates 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. E. No. 657Y Indicator Attachment 1/4” (6.3 mm) OD one end,other end threaded and fits lug backs of all AGD indicators (Starrett Series Nos 81, 25, 655, 656) and Series No. 80 Miniature Indicators. F. No. PT 18724 Snug 3/8” (9.5 mm) diameter post hole. 1/4” (6.3 mm) diameter gripping hole accommodates No. 657X Rod. Magnetic Base Indicator Holder with swivel post assembly No. 657A The swivel post assembly on these holders provides universal adjustment in both horizontal and vertical planes. Available with inch or millimeter Starrett Dial Test or Back-Plunger Indicators, they save time in shop set-up and other inspection jobs. For use with all Starrett Test, Back-Plunger, AGD, Dial and Miniature-Dial Indicators. Also accommodates similar indicators of other manufacturers. Powerful, permanent magnetic base holds firmly to steel or iron surfaces – horizontally, vertically, upside-down. Push-button turns magnetic force on or off for quick, one-hand set-up and take-down. V-step adapts base to horizontal or vertical arbors and chucks. There is an extra 1/4-20 tapped hole in side of base for indicator mounting post. Three precision group magnetic contact surfaces (plus V-step). Black wrinkle finish on non-working surfaces. Magnetic Base Assembly Features: A. No. 657P Magnetic Base is 1.15/16” x 1.5/8” x 1.7/8” (50 x 40 x 48mm) deep B. Swivel Cap Slot permits 90° post travel to horizontal position C. Post rotates 360° D. No. 657F Indicator Swivel Post Assembly is 6.1/2” (165 mm) high (less threaded end). Assembly consists of items B, C, E, F, G. E. Fine-Adjusting Screw. Turn to zero set indicator. F. Upper arm is 2” (50 mm) long with a 5/16” (8 mm) dia. and swings more than 180°, friction joint holds it in position G. 7/32” (5.5 mm) dia. step, 1/2” (13 mm) long Fine-Adjustment Attachment A. Gage Rod 3/8” x 3” (9.5 mm x 75 mm) has 5/16, 1/4 and 7/32” (8, 6.3 and 5.5 mm) steps. Holds No.s 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” (9.5 mm) hole (which will also grip AGD dial indicators by the stem) D. Flex-O-Post No. 657U E. Locking Lever tightens internal steel cable to make post rigid and lock it in position F. Magnetic Base No. 657P has push-button on/off switch Magnetic Base Indicator Holder with Triple-Jointed Arm No. 660 The compact and versatile 660 Magnetic Base Indicator Holder has three adjustable pivots controlled by a single knob for fast, easy indicator positioning. ● Small but powerful magnetic base, with 70 lbs. (320 N) holding force ● Positive On/Off switch ● Base Dimensions: 1.3/16” x 1.9/16” x 1.3/8” (30 mm x 40 mm x 35 mm) ● Horizontal and vertical mounting positions ● Will hold any indicator with a 3/8” (9.5 mm) stem or standard dovetail mount ● Articulating arm with powerful central locking knob, provides full 360° horizontal positioning and over 180° vertical positioning Magnetic Base Universal Indicator Holder with triple-jointed arm and fine-adjustment Nos. 657-1 and -2 Series No. 657-1 Above: No. 709A Dial Test Indicator with dovetail mount. Above: No. 657-1 shown with No. 196B1 Universal Dial Indicator. This versatile indicator holder has three pivots available for positioning the indicator where needed. All pivots are controlled by one tightening knob. It will hold: ● Any indicator with 3/8” (9.5 mm) stem such as our No. 25 and Nos. 650 and 651 Series) ● Any indicator with a standard dovetail mount (such as our Nos. 708, 709, and 811 Series) ● Any indicator with 1/4” (6.3 mm) shank (such as our No. 196 Series) ● Any indicator with a 3/16” (4.7 mm) shank (such as our Nos. 708, 709, 811 and 711 Series) ● Any indicator with a body clamp (such as our No. 711 Series) ● The working area is within a hemisphere having a radius of approximately 12” (300 mm) ● The very sensitive fine-adjustment is located on the magnetic base to eliminate indicator deflection when it is being adjusted ● The No. 657-3 Universal Indicator Holder Arm Assembly can also be used on the No. 659P Base using the No. 659 Thread Adapter, No. PT 18318 No. 660 shown with 81-131J Dial Indicator. ● Maximum Horizontal Reach: 4.750” (120 mm); Maximum Vertical Reach: 7.500” (190 mm) ● Very sensitive fine-adjustment thumb screw MAGNETIC BASES PHOTO KEY DESCRIPTION CATALOG NO. PART# 1-STR- COMPLETE SETS Magnetic Base with All Attachments - A, B, C, D, E, F 657AA 52743 Base and Post Assembly with No. 650B1 Indicator, No. 657S Snug, and 3 Contact Points 657-650Z 65259 INDIVIDUAL COMPONENTS A Magnetic Base Only 657P 52757 B 7.7/16” Upright Base Post Only 657G 52753 C Snug with Two 1/4” (6.3 mm) Holes 657S 52759 D Rod 657X 52764 E Indicator Attachment 657Y 52765 F Snug Complete - 1/4” and 3/8” Holes PT18724 50710 DESCRIPTION CATALOG NO. PART# 1-STR- Base with Flex-O-Post Assembly 657T 52760 Base with Flex-O-Post Assembly and Fine- Adjustment Attachment 657TW 52761 DESCRIPTION CATALOG NO. PART# 1-STR- COMPLETE ASSEMBLIES Universal Indicator Holder, No. 657W Fine-Adjustment, No. 657P Magnetic Base, No. PT17850 Indicator Holding Rod, and No. 657S Snug 657-1 64436 Universal Indicator Holder with No. 657 Magnetic Base 657-2 64437 INDIVIDUAL COMPONENTS PHOTO KEY DESCRIPTION CATALOG NO. PART# 1-STR- A Universal Indicator Holder Arm Assembly Only 657-3 64438 B Fine-Adjustment Attachment 657W 52763 C Indicator Holding Rod PT17850 72400 D Magnetic Base Only 657P 52757 E Snug with Two 1/4” (6.3 mm) Holes 657S 52759 DESCRIPTION CATALOG NO. PART# 1-STR- Magnetic Base with Swivel Post Assembly 657A 52744 Magnetic Base Only 657P 52757 Swivel Post Assembly Only 657F 52752 Swivel Post Adapter Bushing Only (for No. 657F). 657R 52758 CATALOG NO. PART# 1-STR- 660 68621 - 1217 - Toll Free Fax Email Houston Bass Tool & Supply, Inc. 800-442-0042 (713) 681-4931 [email protected] (713) 682-1889 www.basstool.com
