Ключевые слова: accuracy, background, business, calibrated, caliper, calliper, closeup, concept, construction, drafting, drawing, engineering, equipment, geometry, hand, image, inch, industrial, industry, instrument, kit, manual, manufacturing, measurement, measuring, mechanical, metal, metallic, meter, micrometer, millimeter, millimetre, nobody, object, old, repair, rule, ruler, scaling, screw, set, silver, spanner, steel, technical, technology, tool, triangle, vernier, work,