If the head of the screw to give with the help of nalilsya the form shown in the figure, then any attacker will not be able to turn. On such hardware it is recommended to set sensible things sailing and motor boats, hook locks.
Recommend to read
“ELECTRONIC” CULTIVATOR
The idea of creating a mechanical assistant for garden cultivation came to me a long time ago. I looked through relevant issues of the “Modelist-Constructor” magazine with descriptions of...
WHEELS? IN THE TWO ACCOUNTS!
The simplest method of making "shoes" for the trace of the car based on the manufacture of the hubs of the elements of the dry type batteries А343 "prima" and the like. From...
