Ключевые слова: angle, builder, caucasian, day, device, engineer, engineering equipment, equipment, exact, examining, field, grass, green color, ground, hardhat, helmet, holding, house, inspection, instrument, instrument of measurement, level measurement tool, levelling, male, man, measurement, men at work, mensuration, mobile, nature, optical, optical level, outside, person, professional, site, survey, surveyor, tachometer, telescope, tripod, worker,