Specifications: The hot ironing ruler adopts special treatment of heat-resistant plastic material to make sure it is not afraid of the hot steam of the iron(generally below 220 degree Celsius, able to withstand extreme heat of 280 degree Celsius in a short time). You can simply put the ruler in the middle of the fabric and then fold the fabric over, after that you can clearly see the size of the ironed part. The ruler features round angle and which is convenient for measuring special parts. There is also a right-angle design that is used to measure the horizontal and vertical dimensions of the fabric. This user-friendly and practical ruler is an indispensable tool for manual lovers. Item Name: Patchwork Ruler Material: Plastic Features: Heat-resistant, Durable, Measuring Tool, Sewing Supplies Size(Optional): 10cm x 20cm/3.93" x 7.87", 10cm x 30cm/3.93" x 11.81" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Patchwork Ruler