Sometimes the drills, especially in the already served, without distinction, the marking indicating the diameter. It would seem that to define it is only possible with a micrometer. But here’s a simple and fairly accurate method of measurement with… grip. Drill clamped in their jaws, and remaining between them a gap corresponding to the diameter of the already available ordinary ruler with millimeter divisions.
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MISSILE FOR A NUCLEAR WARHEAD
R-5M - the first in the world military equipment of the booster of the nuclear charge. Her starting weight was 28.6 tons, flight range is 1,200 km. Developed in 1954 - 1956, OKB-1 headed...
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When gluing various small items to be tightly pressed against the connecting part is very difficult. Resorted to using masking tape, and rubber bands, and thread. I was faced with such a...
