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Rubert 525 | Precision Reference Specimen | Type C, Sine wave, Ra = 6.25 µm (250 µin)
The Rubert 525 is an ISO 5436-1 type C precision reference specimen with a sine wave profile, used for checking and calibrating surface measuring instruments. It has RSm = 135 µm, Pt = 19 µm, giving Ra = 6.25 µm (250 µin). It is offered in two versions: 525E, with a hard nickel-boron top layer, and 525X, without a top layer.
Key features
- ISO 5436-1 type C, sine wave profile
- RSm = 135 µm, Pt = 19 µm; Ra = 6.25 µm (250 µin)
- Electroformed nickel; 525E with hard nickel-boron top layer or 525X without
- UKAS calibration available on request from Rubert's accredited laboratory
- Specifications
| Part Number | 525 |
| Brand | Rubert |
| ISO 5436-1 Type | C |
| Parameter Values | RSm = 135 µm, Pt = 19 µm |
| Roughness Value | Ra = 6.25 µm (250 µin) |
| Profile / Shape | Sine wave |
| Material | Electroformed nickel |
| Versions | E = with hard nickel-boron top layer; X = without top layer |
| UKAS Calibration | Available from Rubert's UKAS-accredited laboratory on request |
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