The Rubert 130 Composite Set is a comprehensive surface roughness comparator designed for the estimation of surface texture by both touch and sight. This set contains 30 individual comparison specimens, covering six commonly used machining methods. It is supplied in an attractive wallet complete with an instruction card, providing values in both metric and imperial units.
- Comprehensive Comparison: Includes 30 specimens across six machining methods: Turned, End-Milled, Horizontally Milled, Ground, Lapped, and Reamed/Drilled.
- Dual-Unit Calibration: Specimens are calibrated in "u" (micro) inch Ra (CLA) and their metric equivalents (um Ra).
- High Accuracy: Specimens are accurate to within +/- 10% of the nominal values indicated (excluding instrumentation errors).
- Standardization: Values are in accordance with the recommendations of the relative B.S. Specifications and are quoted in Micrometers Ra and micro-inches CLA. The set is also issued with ISO 'N' numbers and Rt values.
- Portability: Compact design, measuring 150 x 75 mm, suitable for field or workshop use.
Specimen Breakdown
Note: The specimen for 0.4 um Ra, Reamed, and Horizontal Milled are included in the Composite Set but are excluded from the individual Scales No's 122 and 123.
The Rubert 130 Surface Roughness Comparators are intended for use by:
- Planning Managers
- Works Managers
- Designers
- Inspectors
- Draughtsmen
