Ключевые слова: background, blue, blue sky, bright, brown, building, close shot, closeup, color, concepts, construction, detail, digital, engineering, environment, gauge, ideas, inspection, iron, linear, lines, local, material, materials, measurement, object, outdoor, part of the design, professional, rough, rust, scale, site, sky, standards, steel, still life, structure, symbols, testing, texture, tools,