This is a set of distance measuring rulers specially designed for guitar repair and self-inspection, made of high-class and durable materials. They can help you measure the level and vertical distance of each part of the guitar and whether the height is consistent. They are very professional and practical. Features -Color: Silver, golden -Material: Aluminum -Size: 10.30X5.20X0.20cm/4.05X2.04X0.08in -They can help you measure the level and vertical distance of each part of the guitar and whether the height is consistent. -The smooth margins can help you measure accurately, and it's very easy to use. -Their compact size keeps them out of the way no matter where they are placed, but is very easy to store. -Manufactured with sturdy aluminum material, the guitar string ruler can serve you a long time. -Their operation method is very simple and can be learned quickly even for the first practical use. Package list: 2 × Guitar String Rulers