Ключевые слова: accuracy, angle, background, building, calibrate, centimeter, construction, decimeter, degree, design, device, distance, education, engineer, engineering, equipment, industry, instrument, level, macro, math, measure, measurement, measuring, mechanic, metal, metric, micro, micrometer, millimeter, number, part, precision, protractor, ruler, scale, science, silver, slide, stainless, steel, technical, technology, tool, tools, work,