1、MULTI FUNCTIONAL DESIGN: String action gauge ruler has multiple functions, including measuring chord height, chord pitch, chord height, as well as checking chord groove depth and repairing chord grooves. 2、HIGH ACCURACY: This tool has accurate scales and markings, providing accurate measurement to ensure accurate installation and adjustment of your guitar strings. 3、STAINLESS STEEL MATERIAL: This guitar set up gauge is made of excellent stainless steel material, durable and not easily damaged. Uses accuracy machining technology to ensure long term use of tools. 4、PORTABILITY: This guitar string is compact in size and height, making it easy to carry and store. Easily fit into a guitar box or music bag, making it easy to use and carry at any time. 5、WIDELY APPLICABLE: This guitar string action gauge is suitable for various types of guitars, including electric, wooden, and bass. Therefore, it is a multifunctional tool suitable for various musical instruments, convenient for musicians and guitar enthusiasts to use. 1 x String Action Gauge Ruler1 x Cloth Bag   Item Type: String Action Gauge RulerMaterial: Stainless Steel