Features: It can accurately measure the bridge size and shape of various guitars, helping guitarists adjust pitch and improve playing experience. Suitable for all types of guitarists, whether beginners or professional performers, this measuring ruler can be used to adjust the bridge size and shape of the guitar. Can be used in guitar repair shops, music classrooms, performances venues, and other places. Whether for guitar maintenance or pre performances tuning, this measuring ruler can provide accurate data support. Professional Luthier Tool is for luthiers, guitarists and guitar lovers. Specifications: Materials: Metal Size: about 9.8x2.49x0.1cm/3.86x0.98x0.04inch Package Includes: 1pc Guitar Bridge Measuring Ruler note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.