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
THE BED-INVISIBLE
THE MYSTERY OF MY GRANDMOTHER'S TRUNK. Looking at it, you can assume anything you want, but not what is hidden inside... the bed. Here rises and becomes a headboard cover, opening rolled...
THE THERMOSTAT-THE CELLAR
Five years ago one of my friends purchased a garage with a cellar and worried about how and what to do to potatoes and other vegetables, planted for winter storage in the cellar, didn't...
