1ACCURATE MEASUREMENT: Guitar neck ruler has accurate scales and measurement marks, which can help you accurately measure parameters such as the length, width, and curve of the guitar neck. 2MULTIFUNCTION: Guitar neck notched straight edge may not only measure neck parameters, but can also be used as a calibration tool to help correct and adjust neck curvature and straightness. 3DURABLE AND LONG LIFE: The guitar neck ruler is made of durable stainless steel material to ensure its long term use and reliability. 4SUITABLE FOR VARIOUS GUITAR TYPES: Guitar neck rulers may be suitable for different types of guitars, such as electric guitars, folk guitars, classical guitars, etc., making them a common tool for guitar manufacturers, repairmen, and musicians. 5PORTABLE: Light in weight and compact in size making these rulers easy to carry and use, whether in concert venues, recording studios, or instrument repair shops.