SAS Archery Bow T-Square Tool String Measurement - Black, Blue, or Red

Bow square measurement helps you to adjust the distance of the bowstring to the arrow rest,so that the bow can be used perfectly by youself. T-Shape bow square. Square attaches to the string above and below the nocking point. To be used to measure brace height and nock position. Durable steel sprint-clips Anodized-aluminum finish laser-etched ruler for precise measurements Color: Black, Blue, Red