The lathe worker is a slow fitter and the clothes hanger is an electrician. What are the jobs of turners and locksmiths? How to understand this sentence?

Hello; What you said is a popular sentence in the past. It's not quite right, but it makes sense. The lathe operator is looking at the lathe, and the lathe is nervous as long as it is open to process parts. The fitter is different. The locksmith has to do a lot of work by hand, which is slower than that. As for the electrician, because the electrician's work needs to go to more places with the needs of the circuit, it seems a bit sloppy, but it is actually determined by the nature of the work. All right.