DJLC-A concrete thickness gauge is composed of signal transmit, connector, signal processing, and display. It reliably measures the thickness of the poured concrete slab of non-metal like structure,concrete,wall,girder,bar,pole,wood and ceramics base on the inpact echo priciple.Main SpecificationThickness Range: First Range:40—350mm; Second Range:200—800mm.Accuracy(Bar coating thickness>15mm):Use ...