Surface Finish Comparator Set Ra 0.05 To 12.5 Micrometers, 30 Hardened Steel Blocks For Quick On The Spot Tactile And Visual Roughness Checks, Quality Control Tool For Machining, Grinding, And Milling

Surface Finish Comparator Set Ra 0.05-12.5 μm (30 Blocks)
✔️ Includes 30 hardened steel blocks for tactile and visual checks

This surface finish comparator kit provides an on-the-spot reference to verify Ra values on machined parts. It's a practical quality-control tool for automotive, aerospace, metal fabrication, and precision workshops, replacing guesswork in roughness checks.

✅ Ra range 0.05-12.5 μm with etched values for quick matching
✅ 30-block set in protective case with oil-coated 45# carbon steel blocks for long wear life
✅ Visual and tactile evaluation from smooth to rough surfaces
✅ Universal use across milling, turning, grinding, and flat lapping
✅ Ready-to-use kit for calibration, QA and training

💡 What is a surface finish comparator set used for in machining?

実際にどのように役立つか、以下に説明します：

- On-site quick Ra verification without electronics - Helps hands-on pass/fail decisions to speed QA workflows - Covers six common machining processes like milling, turning, grinding, and lapping - Durable kit ready for daily shop-floor use ✝️