Ключевые слова: 3d, accuracy, background, blue, centimeter, cm, color, colorful, design, drawing, education, equipment, flat, geometric, geometry, horizontal, icon, illustration, inch, instrument, isolated, length, line, long, measure, measurement, meter, metric, millimeter, number, object, office, pink, purple, render, rendering, rule, ruler, scale, school, sign, size, straight, straightedge, supplies, symbol, tool, web, work,