Ключевые слова: angles, area, building, checking, construction, earth, engineer, engineering, equipment, exact, examination, examining, ground, hat, horizontal, industry, inspection, investigation, land, level, levelling, looking, measure, measurement, measuring, mensuration, optical, points, position, positioning, precision, site, size, sky, survey, surveying, surveyor, technology, theodolite, tool, total, tripod, work, worker, workplace,