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
ON ONE WHEEL
How many points of support should the aircar! Competition rules allow at least three. Earlier it was mostly given preference to such schemes to "extra" fourth wheel is not retarding the...
Drilling on the table
There was a time when it was difficult to buy any attachment in a shop, and especially a metalworking machine tool. It was expensive, and you had to run around the trading outlets. Today...
