What coil do not occur now in our everyday life and tape, and fishing, typewriter and film projector and all have one awkward feature: they are wound — tends to unwind. For all of them a simple and reliable latch will serve kolejno of underwear elastic: soft and wide, it does not give content to unwind the coil.
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If your circle or the personal "reserve" still have one or, even better, several copies of the old glow motors "Comet-5", in no case do not throw them away at the next disassembly, do...
