1. Accurate String Measurement : This set includes one guitar neck string measurement ruler, one string ruler, and one fiber cleaning cloth, making it ideal for precise measurements on guitars, basses, mandolins, banjos, and more. 2. Durable and Versatile : Constructed from stainless steel, the straight ruler is designed for long-term use. Its dual scale design is compatible with most guitars, particularly those with scale lengths of 25 inches (625 mm) and 25.5 inches (648 mm). 3. Comprehensive Settings : The double-sided plastic ruler features easy-to-read fraction, decimal, and metric conversion tables. It accurately measures string height, saddle height, slot depth, fret slot depth, and nut height, covering all essential guitar setup needs. 4. Neck Straightness Check : The notched string measurement ruler is specifically designed for checking the straightness of the neck, fretboard, and frets, ensuring optimal playability. Use Scenarios : - Perfect for guitar technicians who require precise measurements for setup and maintenance. - Ideal for hobbyists who want to improve their instrument setup at home, leading to better sound and playability. - A valuable tool for luthiers working on custom instrument builds, ensuring accuracy in every detail.