A CONVENIENT DRAWING TOOL ITSELF FINDS THE MIDDLE

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For working with metal, this device is very useful. The principle of the drawing tool is quite simple and to create it will require certain locksmith skills. Having appreciated the obvious benefit in operation, you can make such a scriber yourself.

Finding the middle of a metal pipe of round and square cross section is now easy; you can also use the tool for other materials, the main thing is that their size does not exceed the distance between the bearings.