| Selection Guide for Coating Thickness Meters AC-4001 & AC-4008 |
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| Coating | Metal Substrate | ||||||||
| Aluminium | Brass | Bronze | Copper | Magnesium | Steel | Stainless | Titanium | Zinc | |
| Aluminium | Ferrous | ||||||||
| Anodizing | Non-Ferrous | Non-Ferrous | |||||||
| Brass | Ferrous | ||||||||
| Bronze | Ferrous | ||||||||
| Cadmium | Ferrous | ||||||||
| Ceramic | Ferrous | ||||||||
| Chrome | Ferrous | ||||||||
| Copper | Ferrous | ||||||||
| Eloxal | Non-Ferrous | ||||||||
| Epoxy | Non-Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous | Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous | |
| Galvanising | Ferrous | ||||||||
| Metal Spray | Ferrous | ||||||||
| Lacquer | Non-Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous | Ferrous | Non-Ferrous | Non-Ferrous | |
| Paint | Non-Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous | Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous |
| Plastic | Non-Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous | Ferrous | Non-Ferrous | Non-Ferrous | Non-Ferrous | |
| Rubber | Non-Ferrous | Ferrous | |||||||
| Tin | Ferrous | ||||||||