It can rapidly and exactly search for tiny defect, needle hole, crackl, gas crack on the anticorrosion coating of the metal and correctly note down the number of damaged point on the coating.

• 快速精确地搜速金属表面防腐层的极小缺陷,针孔,裂纹,气隙并准确地记录防腐层破损点的个数。