Ключевые слова: accuracy, background, caliper, calipers, calliper, circle, circular, clearance, close, closeup, concept, conceptual, design, element, gear, groove, handcraft, industrial, industry, instrument, life, machine, machinery, manmade, manufacture, manufacturing, measure, measurement, measuring, mechanical, mechanics, mechanism, metal, object, part, precise, preciseness, precision, production, progress, rotating, round, scale, shape, sprocket, still, technological, technology, tolerance, tool, vernier, wheel, white,