The belt on the buttons unbuttoned even faster than secures, even from mild random efforts. However, to abandon the buttons and replace them with, for example, hooks is not necessary. A small improvement — and is amazing: here is a duplicate keypad lock, which is shown in the figure, unexpectedly will never undo. He arranged quite simply: on one end of the belt of polyrope sewn on both sides, and return their parts are fixed on the other, bifurcated end of the belt. S. GOLIKOV, St. Petersburg, Russia
Recommend to read
THE SPOON ON THE BUCKET
Well mixed mortar is quite a heavy mixture, which is difficult to work with. To give greater plasticity, the builders introduced it with various additives, such as clay. Work becomes...
ELECTRONIC TRANSFORMER
A power transformer is to convert alternating current of one voltage to alternating current of another voltage at a constant frequency. The device in the normal "classic" transformer all...
