1、T SHAPE DESIGN: This bow measuring ruler utilises a T shape design, which allows you to adjust the bow gear more accurately and improve the accuracy of your archery. 2、LIGHTWEIGHT AND DURABLE: Made of ABS material, it is lightweight and easy to carry and use. Meanwhile, the ABS material has good durability to ensure long lasting use. 3、UNIQUE DESIGN: It can adjust the arrow tail arrow setting point to ensure the arrows are centered on the same target, and at the same time, help the user to better control the arrow's flight path and improve the archery accuracy. 4、UNIVERSAL: Suitable for different types of bows and can enhance the user's overall performance. It has a fine scale that helps users measure the bow gear and adjust the bowstring pressure. 5、USE: Set the T ruler on the deeper part of the pusher and measure the distance to the bowstring, which is roughly between 22.5‑25cm. Take the height of the archery table, make the arrow setting point, the arrow setting point has a great influence on the arrow point, after the bow is adjusted, put the T ruler on the string, the long ruler is set on the archery platform, the top and bottom of 1mm each start to wind the arrow setting point. Item Type: Archery Bow T Shape Ruler Material: ABS Weight: Approx. 51g / 1.8oz 1 x Archery Bow T Shape Ruler