What kind of instrument is this and what kind of indicators are measured?

This thing is called a thickness gauge, and its working principle is to determine whether there are traces of sheet metal or painting by detecting the length of acoustic wave band between paint surface and car body iron sheet. In the detection, if there is an interval with a large drop value and a certain area, it can be judged that the vehicle has been trimmed by sheet metal and spray painting.

Which kind of orthodontics is good?

How many times does it need to be done in picoseconds? How many times is it effective? I heard that it needs to be done many times, is that right?

Has anyone had plastic surgery? How do you feel after plastic surgery? Any regrets?

How about the supporting facilities around the second phase of Jiujiang Hongya Garden?

The first 88 signs of Guanyin spirit asked the master to cancel the signing. I go to court with others. I am very wronged and want to find someone to help me. Can someone help me?

Zhaotong java Training School tells you that girls don't want to go out to work. What skills do you learn and have good employment prospects?

What hairstyle is trapezoidal face suitable for?

Is there any indigenous way to get rid of pouch?

Why does the owner of plastic surgery institutions in Jinan have conflicts with customers? Is there something hidden behind it?

Evidence of Lan Xin and Echo!