Features:
- Used for quick zero adjustment of dial bore gages, Holtest and inside micrometers.
- Actual inside diameter is marked on each ring.
- Ceramic setting rings do not require anticorrosion treatment and have extremely high wear-resistance, resulting in simple maintenance and long life.
Technical Details
| Size | 90mm |
| Accuracy | ±2.5µm |
| The marked value may differ from nominal size by | ±10µm |
| Cylindricity of setting rings | 1.5µm |





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