Ключевые слова: accuracy, architect, architecture, bricklayer, builder, builders, business, calibration, contractor, design, engineer, equipment, hardhat, helmet, horizontal, inclination, instrument, level, man, measurement, outdoors, people, person, plan, position, precisionengineering, profession, professional, project, projecting, protective, realestate, scale, sensitivity, spirit, steadfast, steadiness, stonemason, tool, worker,