Ключевые слова: attention, attentive, building, color, color image, colour, colour image, concrete, construction, construction industry, construction worker, craft, drawing, equipment, folding rule, hand work, hand worker, helmet, horizontal, industry, job, line, man, manual worker, mark, marking, measurement, measuring, occupation, photo, photography, photos, precision, profession, ruler, safety helmet, straight, tool, wall, work, worker, working,