Ключевые слова: angles, area, blue, building, cap, checking, construction, earth, engineer, engineering, equipment, examination, examining, ground, hat, horizontal, industry, inspection, inspector, instrument, land, level, look, measure, measurement, measuring, men, optical, points, position, positioning, precision, safety, see, site, sky, survey, surveying, surveyor, surveyors, technology, telescope, theodolite, tool, tripod, work, worker, working, workplace,