Paint Inspection Gauges (PIG)

A paint inspection gauge can be used for microscopic coating examination and destructive measurement of coating thickness. 

Testing with the BGD 548 is based on the standardized wedge cut procedure: The coating is cut through at a defined angle in a manner that the cut penetrates the substrate. The layer thickness (s) is calculated based on the slope projection (b) of the cut face, determined using a measuring microscope, and the cutting angle (α). Similarly, the individual layer thickness of multilayer systems can be ascertained.