Ra0.05 to Ra12.5 Micrometer Surface Roughness Comparator Kit With 30 Specimens for Machinists and Metrology Pros - Pro-Grade Finish Gauges for Quality Control, Precision Machining, and Surface Texture Testing

Ra0.05-Ra12.5 Surface Roughness Kit: 30 Specimens
✔️ 30 blocks across Ra0.05-Ra12.5 μm, six processing methods

This portable reference kit provides exact surface roughness standards for machinists and quality control labs. It’s designed for use in workshops, training classrooms, and metrology tasks to verify texture after milling, turning, grinding, and lapping.

✅ 30 specimen blocks covering Ra0.05-Ra12.5 μm
✅ Six processing references: horizontal milling, vertical milling, turning, plain grinding, flat lapping, external grinding
✅ Made from 45 carbon structural steel with heat treatment and protective oxide barrier
✅ Each block clearly labeled with its Ra value for quick comparison
✅ Durable, organized housing keeps the set ready for routine shop use

💡 What is a surface roughness comparator kit used for in machining and metrology?

This handy tool provides quick, repeatable references for texture checks. - Handy for calibration and training in metalworking shops - Useful for training and process verification in manufacturing environments - Helps compare real parts against stored Ra values quickly ✝️