Highly Heat Resistant - Made of special treated high temperature heat resistant transparent resin, this hot ruler is sturdy and flexible to use, not easy to fracture or deform. It works great at temperatures below 220 C / 428 F and can withstand temperatures as high as 280 C / 536 F for a short time. Don't worry about the hot steam from the iron damaging it. Convenient 2-in-1 Design - The hot iron ruler comes with a round angle, which is ideal for measuring some special parts. And there is also a right angle design allowing you to measure the horizontal and vertical dimensions of the fabric. Meet your different sewing needs. Easy to Use and Clean - Our hot ironing rule set is easy to handle. Place the ruler in the middle of the fabric and the non-slip surface of the ruler will hold the fabric in place to prevent it from going anywhere; Fold the cloth over the ruler; Align the ruler to the desired angle, and the evenly measured lines and marks allow you to clearly see the size of the ironed piece; Press with an iron to sew the hems in no time. Lightweight and Compact in Size - These sewing tools in 2 different shapes and sizes are ideal for your application. The large one measures approx. 30cm / 11.8 ' * 10cm / 3.9 ', while the small one is about 20cm / 7.9 ' * 10cm / 3.9 '. And it is light, easy to store and transport. NOTE: These rulers are graduated in centimeters, not inches. Wide Use - Suitable for various kinds of sewing work, the sewing ruler can not only fit measurement and hemming, but also other quilting crafts, reducing your sewing time all while maintaining precision. Which makes it an indispensable tool for textbook enthusiasts. Product More features: The hot ironing ruler is made of special processed high temperature heat resistant transparent resin, sturdy and flexible to use. The thermal padding ruler is easy to use with a non-slip surface that holds the cloth in place for comfortable operations. Comes with round and right angles, the sewing ruler can adapt to different edges. Designed with evenly measured lines and marks, this tool lets you sew and iron hems with speed and precision. Lightweight and compact in size, the ruler is easy to store and transport. Suitable for various sewing and hemming tasks as you can use it with a dry or steam iron Specification: Material: resin Yellow color Weight: 30g Size in large ruler: 30cm / 11.8 ' x 10cm / 3.9 ' Size in small ruler: 20cm / 7.9 ' x 10cm / 3.9 ' Notes: This ruler is graduated in centimeters and not in inches. Please allow 1-3mm differences due to manual measurement. The real color may be slightly different from the picture due to different monitor and light effect. Package included: 1 * large ironing ruler 1 * small ironing ruler