- The package includes one guitar neck string measuring ruler and one string ruler, providing precise action measurements for various string instruments, including guitar, bass, mandolin, and banjo. - The Guitar Neck Straight Ruler is crafted from durable stainless steel, ensuring it is rust-proof and suitable for long-term use. Dimensions are 41.9 x 3.7 x 0.3 cm, and it weighs 230 g. Its dual scale design is compatible with most guitars, particularly Gibson (62.9 cm) and Fender (64.8 cm) electric guitars. - The Fritz Ruler is made of high-quality plastic and features a double-sided design. The back includes a fractional, decimal, and metric conversion table. This ruler measures string height, saddle height, saddle slot depth, fret slot depth, and nut height, allowing for accurate adjustments to your instrument. - The string measuring ruler is specifically designed to assess the straightness of the guitar neck, fretboard, and frets. The Fritz ruler is ideal for measuring nut, string, bridge, pickup bar, saddle height, and the depths of saddle and fret slots. - Practical applications include setting up your guitar for optimal playability, ensuring precise string height adjustments for better action, and performing routine maintenance checks to keep your instrument in top condition. - With its sturdy construction and versatile functionality, this measuring tool is essential for guitarists looking to enhance the performance and longevity of their instruments.