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.
Recommend to read
DIMENSIONLESS CLAMP
The range of action of conventional clamps is significantly expanded, if the emphasis is extensible, as the wrench. It is done so. In an l-shaped bracket drilled and cut the hole for the...
“NONA” IS ONE IN THREE PERSONS
The military doctrine of the USSR was for the use of airborne troops (VDV) to lead the fighting of the enemy in the course of large-scale strategic offensive operations. This "winged...
