To spend simply a circle on a plane costs nothing with the help of a compass. But what if this line should cover a cylindrical billet? For a rough layout, you can use string or a rubber ring. The marking will be more accurate if the workpiece perpendicular to lower the fluid: boundary wetting will become the desired line. Another option is to wear to the cylinder tube of suitable diameter or wrap it with a strip of paper, foil.
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ARSENAL QUALITY
CHAINMAIL FOR THE METAL. Like invisible arrows, affects the corrosion of metal surfaces operating in hostile or wet environments. Rust stains, caked wounds cover almost the entire...
WITHOUT CUTTING THE FILM
To view footage of film is convenient to use diazapam, making cuts to the film advance. D. NOVIKOV, Krasnoyarsk
