This is an aluminum ruler suitable for stained glass making and other similar crafts. It is easy to use, with a comfortable weight and a shape that fits well in the hand. The top and sides are made of a material that allows a glass cutter to slide smoothly, while the back is made of a non-slip material that fits the glass. The rubber on the top can be used for tasks such as breaking glass. Although a regular cutter can also be used, please be aware that the blade may cause scratches. Please check the images for slight unevenness on the surface rubber, scratches on the back, and yellowing. Effective length: approximately 59.4 cm Width: approximately 7 cm There may be scratches on the aluminum parts. There are no scratches on the parts that affect the work. Thank you for your understanding. Length: Approximately 59.4 cm Width: Approximately 7 cm Weight: Approximately 690 grams Thank you.