To make required urgently a small spring — not a problem, if there is at hand a suitable steel wire. You can just use a vise and a rod of any desired diameter. The last will only need to drill blind or through hole for entry of the wire end, with the subsequent winding of the coil to a coil.
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NEW EASTERN WAY
After her victorious Russo-Japanese war, Japan immediately moved to a new class of naval powers, occupying one of leading places. After the commissioning of the trophies of the Russian...
Fire from… water
Anyone who reads the description of the electrolyzer I developed will be convinced that a few liters of water are enough to obtain a high-temperature flame (200° C).
The high flame...
