Hello my friends! The next trick I doubt you know! Be honest and tell me in the comments if you know this. How many times have you had to find the center of a screw or a thin iron rod? It is true that there are special tools for finding the center of cylinders, but they are not suitable for really thin cylinders - 10 mm. In the next video I will show you how to find the center in really small metal pipes, for example: screws, thin iron rods and more. All without special tools.