In a small box, like a gear in the clock mechanism, to be able to accommodate all the spools of thread. The easiest option “niccotine” — plywood base to drive in a staggered cloves of suitable length and thickness: they will serve as axles for reels. Now cover the base cover, cut a slit in it and print them through the ends of the thread. Pull any, pull how much and conveniently and accurately.
Recommend to read
THE AIRCRAFT, F-3
In our city of Kingisepp were gliding club ROSTO, which I have since 1996 worked as a flight instructor. Of aircraft in the club were two light aircraft, four airframe. But they were not...
SPRAY? DISK!
For chemical protection of agricultural crops from pests and diseases, and in making micronutrients during weeding chemicals are usually converted into coarse aerosol, which is directed...
