Crack Depth Gauge

specificities：

1.Newly upgraded, three-proof shell design, waterproof, dustproof and shockproof.

2.The field test is simple, fast and does not require manual interpretation of acoustic parameters to directly show the crack depth

3.The instrument is easy to operate, fast to master, and no professional knowledge is required

4.High test accuracy, with the maximum error not exceeding 5mm or 2%-10% of the actual seam depth

5.The use of bracket test without marking, spacing is accurate, adjustable, greatly improve the efficiency of testing.