Dial Indicator, 1", Starrett

- Range: 1.000"
- Face diameter: 2-1/4"
- Graduations: 0.001"
- Shockless, hardened steel gear train and jewel bearings
- Lug on center of the back
Starrett catalog number 25-441J.
These indicators have a shockless, hardened steel gear train and jewel bearings. They are furnished with a lug on the center of the back.
This is an AGD Group 2 indicator with a 2.25" Diameter face, 0.375" shank, and #4-48 tip thread.

An indicator is only useful when the tip is bearing against a surface to be measured. The action of pressing the tip against the surface moves the needle, also to some random position. But this position is relevant; turn the bezel so that the needle is pointing at zero. Now you can make measurements, both positive and negative, relative to the starting position.
AGD Group | Face Diameter | |
0 | 1.00 - 1.38" | 25 - 35 mm |
1 | 1.38 - 2.00" | 35 - 50 mm |
2 | 2.00 - 2.38" | 50 - 60 mm |
3 | 2.38 - 3.00" | 60 - 75 mm |
4 | 3.00 - 3.75" | 75 - 95 mm |
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WARNING: This product can expose you to lead, which is known to the State of California to cause cancer and/or reproductive harm. For more information go to www.P65Warnings.ca.gov. |
Range | 0" - 1" (0 mm - 25 mm) |
Resolution | 0.001" (0.03 mm) |
A.G.D. Group | 2 |
Face Diameter | 2.25" (57.1 mm) |
Shank Size | 0.375" (9.52 mm) |
Thread Tip | #4-48 |
Dial Reading | 0-100-0 |
Revolution | 0.100" (2.54 mm) |
Type | Lug backing |
Dial Face | Continuous Dial |
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Dial Face |