Ultrasonic thickness gauges can be used for a variety of fiberglass applications. Fiberglass storage tanks and pipes, for example, need periodic thickness monitoring to assure that no erosion or delamination from corrosive chemicals has resulted. Other applications are electronic circuit boards, coil bobbins, and sporting equipment. Ultrasonic gauges can be used on many types of fiberglass: cloth, mat, roving, filament wound, or combinations of these.

Equipment: Selection of gauge and transducer mainly depends on the desired thickness range capability and quality of the composite material. The Model 35DL-HP covers the widest thickness range, from 0.050 to 3 in. (1.25 to 75 mm). Using a unique transducer design (M2008) and innovative signal processing electronics, the 35DLHP is capable of making thickness measurements in many difficult fiberglass applications. Other transducers such as the M1036 or M109 will be used for thicknesses under 0.50 in. (12.5 mm).