Ключевые слова: architectural, attach, background, billboard, blue, blueprint, board, bulletin, centimeters, cut, design, detail, drawing, equipment, geometric, geometry, gradient, graph, graphic, grid, guides, illustration, inches, industrial, instruments, length, line, mat, math, measure, measurement, metal, metric, number, office, patchwork, pattern, plastic, print, rotary, safe, scale, science, sheet, space, technology, tools, white, width,