Frost-proof ultrasonic thickness gauge for difficult weather conditions (from -30˚ to +50 ˚С). The range of thickness measurement on steel is from 0,7 to 300 mm. Work with both single-crystal and double-crystal transducers. The single-crystal wear-resistant transducer S3567 2.5A0D10CL is used to measure thickness of metals, cast iron and other materials with high ultrasound attenuation.