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Product Specifications:
| Item | Magnetic Base w/Attachments |
| Arm Type | Rigid |
| Base Depth | 1 5/8" |
| Base Height | 1 15/16" |
| Base Length | 1 7/8" |
| Base Size | 1 7/8" L x 1.625" W x 1 15/16" H |
| Base Thread Size | 1/4"-20 |
| Base Type | Magnetic |
| Base Width | 1 5/8" |
| Color | Black |
| Compatible Indicator Mounts | 1/4", 3/8" |
| Finish | Black |
| Holding Power | 100 lbf. |
| Includes Snug | Yes |
| Magnet Type | On/Off Knob |
| Magnetic Pull | 100 Lb. |
| Magnetic Pull | 100 lbs. |
| Material | Cast Iron |
| Max. Reach | 12" |
| Overall Length | 9 1/2" |
| Rod Dia. | 1/4" |
| Screw Type | Knob |
| Snug | Swivel Post |
| Step Type | Flat |
| Switch Type | Push Button |
| Thread Size | 1/4"-20 |
| Working Length Of Post/lower Arm | 7 1/2" |
| Working Length Of Snug/third Arm | 2" |
| Working Length Of Upper Arm | 6" |
Shipping Info:
| Ship weight (kg) | 0.9 |
| Ship height (cm) | 5.33 |
| Ship length (cm) | 26.16 |
| Ship width (cm) | 7.37 |
| HS code | 8505904000 |
| Country of Origin | US |
Product Details:
- Ideal for use with all Starrett test, back-plunger, AGD, dial and miniature-dial indicators
- Comprises all attachments: upright base post, two snugs, rod and indicator attachment
Product Variants
| Product | Model | Compatible Indicator Mounts | Magnet Type | Max. Reach | Arm Type | Includes Snug | Base Height | Base Width | Base Length | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
657D | Lug-On-Back | On/Off Knob | 15" | Rigid | Yes | 1 15/16" | 1 5/8" | 1 7/8" | €642.72 | |
![]() |
657EZ | Lug | Permanent | - | - | No | 1.89" | 1.625" | 1.89" | €1,227.96 | |
![]() |
657G | Post Only | - | - | Rigid | No | - | - | - | €38.80 | |
![]() |
657C | Post | Permanent | 4" | - | Yes | 1.89" | 1 5/8" | 1.89" | €863.01 | |
![]() |
657-650Z | Post | Permanent | 6" | - | Yes | 1.89" | 1 5/8" | 1.89" | €1,433.25 | |
![]() |
657E | Lug | Permanent | 9 1/2" | - | No | 1.89" | 1 5/8" | 1.89" | €945.44 | |
![]() |
657B | Body Clamp | Permanent | 4" | - | Yes | 1.89" | 1 5/8" | 1.89" | €959.89 |
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Contact us
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STARRETT 657AA 52743 Magnetic Base With Attachments, 0.25 Inch, Upright Post
€479.79 /unit







