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Rubert 117 | Series 100 Roughness Comparator – Flat Lapping | Ra 0.025–0.2 µm, N1–N4, 4 Patches
With 4 + 4 patches covering Ra 0.025–0.2 µm (1–8 µin), roughness grades N1–N4, the Rubert 117 gives a workshop reference for flat-lapped faces with criss-cross and parallel lay. It is part of the Series 100 line, the heavy-duty comparators made for shop-floor use, and lets operators check a flat lapping finish against reference roughness values. A lightweight Microsurf equivalent (317) is offered for office and design use.
Key features
- Machining method: Flat Lapping (criss-cross / parallel)
- Number of patches: 4 + 4
- Ra 0.025–0.2 µm / 1–8 µin
- Roughness grades N1–N4
- Heavy-duty Series 100 construction for workshop use
- Specifications
| Part Number | 117 |
| Brand | Rubert |
| Series | 100 (heavy-duty, workshop use) |
| Machining Method | Flat Lapping (criss-cross / parallel) |
| Number of Patches | 4 + 4 |
| Ra Range (µin) | 1 to 8 |
| Ra Range (µm) | 0.025 to 0.2 |
| N-Groups | N1 to N4 |
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