Rulers & Protractors Kaisai
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 | Feature: 1. [Parallel Line Drawing] The rolling ruler features a roller for easy parallel line drawing, ensuring stability and preventing slippage while you create parallel lines. 2. [Versatile Usage] With a round hole for every centimeter, the drawing ruler allows you to draw circles and ovals, versatile and practical. 3. [Clear Measurements] The measuring rolling ruler is designed with clear scales and various formulas printed on the roller for quick calculations, ensuring accuracy and efficiency. 4. [Lightweight and Portable] Made of transparent plastic, the parallel drawing ruler is lightweight and easy to carry, while its clear material enhances convenience during drawing. 5. [Practical … |  |