General Overview
Film thickness measurement is crucial in the testing of paints and coatings, affecting appearance, protection, and durability. Minimum film thicknesses are specified to ensure adequate protection, while excessive thickness can increase costs and affect drying time.

Mechanical Wet Film Thickness Gauges
These gauges are portable, easy to use, and can measure on various surfaces like glass, wood, metal, or plastic. They are cost-effective compared to other systems.

Model 234
Complies with ISO 2808, ASTM D1212, BS 3900 : C5. Suitable for flat or uniformly curved surfaces. The disc-shaped instrument rolls over the wet film, measuring thickness as the rib picks up coating material. Available in eight versions with different measurement ranges.

Model 333
Complies with ISO 2808, BS 3900 : C5. Suitable for flat and slightly curved surfaces. The comb-shaped instrument uses teeth to measure film thickness. Available in three ranges.

Model 433
Complies with ISO 2808, BS 3900 : C5. Suitable for any substrate. Similar to Model 333 but with a broader measuring range and higher accuracy. Can be certified for QA systems.

Order Information
Each model has specific order numbers and measurement ranges, with varying read-off accuracies. Model 234 ranges from 0-1500 µm, Model 333 from 0-1200 µm, and Model 433 from 5-1500 µm.

Conclusion
These mechanical gauges provide reliable and accurate measurements for quality management in coating applications, with options for certification and a range of models to suit different needs.