- Mil Scale
In the U.S., we use an Imperial unit of measure called “mil” to measure the thickness of coatings. One mil is equivalent to 1 thousandth of an inch (or 25.4 microns), but that’s not the easiest thing to visualize. To give you a better understanding of mil thickness, we’ve put together this infographic to compare mil thickness specs to common everyday objects.
Remember: when you’re actually measuring wet film thickness (such as with a WFT Gauge), the coating’s thickness will shrink once it dries. Dry Film Thickness (DFT) refers to thickness after the paint has cured and what’s left is volume solids.