This guitar tool set is suitable for all types of guitars, including acoustic, electric, and bass guitars. It provides precise measurements of the string spacing and neck notch, allowing guitar players to adjust their instruments for optimal performance. The ruler is easy to use, and the measurements are accurate, ensuring that the guitar is properly set up. The included polishing cloth helps to keep the guitar clean and well-maintained. Features -Color:Silver -Material:Stainless steel, cloth -Size:42.00X3.70X0.25cm/16.51X1.45X0.10in(neck ruler) -Size:20.00X20.00X0.20cm/7.86X7.86X0.08in(cloth) -Size:8.50X5.40X0.25cm/3.34X2.12X0.10in(string height gauge) - Versatility: Vernier rulers help measure bridge grooves, heights of strings, nuts, and pickup pole pieces, and even fret groove depths - Practical: Notched straight-edge rulers help check that each fretboard is in the same horizontal position, the fret rocker can span 3 frets and can check if the frets are on the same level - Guitar accessory: These guitar luthier tools are great accessory for guitar technicians and guitarists to maintain and repair instruments by themselves in a short time, reduce hum - Prevent being stuck: The long ruler can prevent it from being stuck firmly on the parts of the guitar, and prevent the displacement from affecting the measurement results - Reasonable design: Reasonable shapes and excellent craftsmanship ensure their popularity among the people Package list: 2 x neck ruler 2 x string height gauge 2 x cloth