Benefits
- Allows for quick, reliable comparison of blasted surfaces with standardised roughness levels.
- Compact and rugged for field use.
- Conforms to ASTM D4417.
- Ensures consistent preparation before coating.
- Five different grades of roughness in each comparator.
- Includes a 5X magnifier and vinyl case.
How Does The Surface Profile Comparator Work?
Visual Method:
- Place the disc beneath the magnifier.
- Position the magnifier on the blast-cleaned surface.
- Visually compare the surface texture with the disc’s segments.
- Use the “V” markers between sections for greater accuracy.
Tactile Method:
- Touch the blasted surface with your fingertip or a soft wooden pencil.
- Compare the tactile feel with the disc segments to determine the profile depth.
What’s Included?
- High-purity nickel electroformed reference disc.
- 5X illuminated magnifier for detailed inspection.
- Vinyl case for protection and portability.
Each reference disc is a precise copy of a master disc, duplicated within ±50 microinches, and is available for sand (S), shot (SH), or grit/slag (G/S) blasted surfaces.

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