What do you mean by car inspection tools? It's a good question

Not long ago, I had a small chat with my friends. I talked about a lot of household chores and work,

Because my job now is to make auto parts inspection tools, and I also talked about the current situation of our work, problems in various work, etc. in the middle of the way, a friend said, "what do you mean when you talk about auto inspection tools for half a day?" It's easy for me to answer such questions

Since there are always questions to answer, I took a little time to tell him what the car inspection tool means