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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SWITCH WITH PROTECTION
In many technical constructions, devices, in laboratory and bench equipment, automobiles used a DC electrical supply voltage of 12 V overload protection, which can lead to spontaneous...
SIX INDEPENDENT AND DRIVE
The Rover, shown in the photo, the original was made in a caterpillar form, and then converted into a four-wheel drive wheel, which for many years is in operation. Each of the six...
