Ключевые слова: abstract, architecture, background, balck, brow, centimeter, corner, design, desk, edge, element, graphic, graphics, icon, icons, illustration, inch, inches, isolated, marks, measure, measurement, measuring, metal, metric, millimeter, objects, office, outline, paper, pencil, pica, protractor, red, rule, ruler, scale, school, set, size, square, start, steel, student, tape, tool, white, work, yellow,