DIY drawing tool

To draw parallel lines on flat surfaces, you can make a special device. It is useful for working with metal, plywood and fiberboard. The main condition for using this drawing tool is the even edge of the material along which the ruler is drawn.

Two strips of metal are fastened together by welding in the shape of the letter "T". Two bearings are located on one strip, holes for a pencil are made on the other.

To make it convenient to use the tool, the holes in the ruler can be positioned at the desired distance or at the same interval.