EXACTLY SPIRAL

Device for spiralno lines are usually quite complex in design, can not be said about the method of its receipt. A circular boss fixed to prepared for the drawing surface; the wound on the boss thread, and the other end tied on pen or pencil — that’s all, “device”, which is clear from the figure.

THE INSTRUMENTAL-REVOLVER

Shield with instruments convenient, but takes a lot of space on the wall. To combine ease of use with economical home location of instrumentals that will allow such revolving design: the metal clip-bracket and rotating the box. If the latter is to do with doors, it is on the shelves, you can store bulk fixtures.