Ключевые слова: background, blueprint, builder, building, building contractor, business, calculator, carpenters level, civil, concept, construction industry, contractor, cutter, design, development, draft, drawing, dwelling place, engineer, engineering, hammer, hardhat, helmet, home, house, industrial, industry, libella, line, notebook, occupation, office, paper, pencil, plan, professional, project, real estate, renovation, tool kit, yellow,