With a length of 30cm, this ruler is designed with 35mm wide calibration markings on both the top and bottom for precise measurements. The flexible material used in its construction ensures durability and ease of use. Whether you're a student, artist, or professional, this ruler is a versatile tool for various applications. Its clear markings make it easy to read measurements accurately. Add this ruler to your stationery collection for reliable and efficient measuring tasks. Stay organized and precise with this high-quality ruler that combines functionality with flexibility.