The upgrade of the well proven QuintSonic coating thickness gauge combines measuring system and evaluation software in an ultrasonic sensor directly connected to an industrial tablet. QuintSonic T measures the individual thickness of up to 8 layers on different substrates (e.g. metal, plastics, GFRP, CRFP, WPC, fibre reinforced composites) using the ultrasonic run-time method. Measurement of all layers is performed in only one operation.