1 Set Four-Piece Professional Ruler Kit: Triangle Rulers, Straight Ruler, Protractor, Anti-Scratch Transparent Ruler. Ideal For Office Workers, Designers, Crafters-For Technical Drawing, Sketching, Daily Measurement. Premium Shatter-Resistant Material; Bold Scales For Easy Reading, Transparent Design For Precision. Lightweight, Fits Pencil Cases. Must-Have For Pros, Great Gift, Boosts Work Efficiency.