Do not you find that a bunch of keys in your pocket slizhkom became cumbersome? Solder them in pairs, and it will be much more compact and easier to use. The keys are connected to a pair of depending on the length and destination. Possible combinations can be the key to the apartment and from the mailbox; the key of the garden gate, and to give the key to the garage and from the castle at the gate.
Recommend to read
CHILDREN’S TWO FLOORS
For 10 years I read the magazine "modelist-Konstruktor", and from year to year it is more and more like me. However, all this time was your "dependent": only used published drawings for...
ON ONE WING
Not for the first ten years there is a class of experimental aircraft. It would seem that this time is sufficient to clearly determine the best scheme inflected wing", the most favorable...
