Ключевые слова: 90, accuracy, accurate, angle, architect, background, building, carpenter, centimeter, construction, corner, craftsman, degree, equipment, erection, exact, finger, glove, hand, industry, install, instrument, iron, iron ruler, job, labor, machine, measure, measurement, metal, metric, object, old, precise, precision, ruler, scale, square, steel, technical, tool, tsquare, wood, work,