Fingerboard Ruler Steel Guitar Neck, Corrugated, Straight Edge for Mandolin Description: [Material] Guitar neck ruler made of high quality steel materials that ensure long-lasting use, dimensions 16,54''x1,22''x1,06''. [Design] Three-edge ruler and straight ruler can help you measure neck curvature and threshold position more accurately. [Measurement Function] The guitar neck straight edge meter can measure neck curvature, fret position and fingerboard flatness to help you adjust and fix your guitar accurately. [Portable] The measuring tools for luthiers are of moderate size and can be easily stowed away in a box or pocket, making it easy to adjust and repair your guitar at any time. [Application] Notched Straight Edge Luthiers tool is suitable for various types of guitars, including electric guitars, acoustic guitars, etc. Specification: 42 cm x 3,1 cm x 2,7 cm or 16,54 inch x 1,22 inch x 1,06 inch The package includes: 1 ruler for guitar neck