Uxcell Archery Bow Square T-Shape Ruler Turning Bow String Measurement Tool Blue

What is this? The T-square can be fixed on the string above and below the nock point with two measurement units and the markings are clear and easy to read which is convenient to use. The brass buckle and arrow nock pliers can help lock the position of the string nock point and just a little adjustment can improve your archery accuracy. Are there any advantages of the product? The T-square is made of aluminum alloy sturdy corrosion-resistant durable not easy to fade and can be used for a long time. How to use it? 1. Measure the string distance with a T-square 2. Adjust the copper buckle position (Not provided) 3. Confirm the arrow position 4. Fix the copper buckle with pliers (Not provided) What should I notice? Please determine the size and archery accessories of the T-Shaped Bow Square Ruler before purchasing