Ключевые слова: angle, angulation, architecture, background, builder, building, business, checking, civil, civil construction, commercial, construction, construction site, contractor, development, device, engineer, equipment, foreman, geodesic, geodesy, geodetic, ground, hardhat, helmet, industrial, instrument, land, laser, level, levelling, measure, measurement, optical, people, points, positioning, professional, project, protection, site, surveyor, technology, theodolite, tool, topographic, tripod, worker, working, workplace,