30 Piece Surface Roughness Comparator Set With Ra0.05-12.5um ISO2632 I-1975 Standard For Surface Roughness Testing Gauge Blocks For Quick QC Checks On Metals Plastics And Machined Parts

30 Piece Surface Roughness Comparator Set for Quick QC
✔️ 30 Ra0.05-12.5 μm AA standards for quick, accurate checks

This 30-piece surface roughness comparator set provides calibrated reference blocks for AA values and Ra metrics. It is used to assess surface finishes on metals, plastics, and machined parts. The blocks are made from 45 steel, with GCr15 blocks plated for lap reference. All 30 specimens are calibrated to AA (arithmetic average) and metric Ra equivalents, and follow ISO2632 I-1975 standards.

✅ 30 specimens calibrated to AA values and metric Ra equivalents
✅ Ra range 0.05-12.5 μm for common finishes
✅ ISO2632 I-1975 standard reference for surface roughness testing
✅ 45 steel blocks with GCr15 plate-lapped sample blocks

💡 What is a surface roughness comparator set used for in quality control and manufacturing?

This handy tool provides quick visual references for Ra and AA values to guide pass/fail decisions in QC workflows. - Handy for quick QC checks on metals, plastics, and machined parts - Helps maintain consistent surface finish by eye and magnifier - Aligns with ISO2632 I-1975 standards for traceable measurements✝️