Ruler marking device

This device includes a marking ruler, finding the center of round rods, plus you can draw lines at 45 degrees

Assembly begins with threading. 4 M3 holes in the bottom and M4 thread in the locking handle. Then we press the M4 nut (size 7) into the upper part into the hexagonal hole, screw the M4 screw into the locking knob and lock it with the nut.

Собираем все в единую деталь винтами М3. Ставим линию и пользуемся.