Almencla Guitar Leveling Digital Ruler Tool Set for Luthier/Acoustic Guitar Maker Repair Tool, Neck Curvature Measurement Guitar Tool,.This is a guitar neck straightness measuring tool, ideal for measuring neck curvature and adjusting the fretboard. It is an essential tool for guitar calibration and maintenance.This guitar leveling digital ruler is made of premium metal and electronic components to ensure its service life and reliability in use.The neck measuring rod measures 30cmx4cmx1.1cm, while the digital display ruler measures 5.7cmx2.5cmx12cm, making it compact enough to be handheld, but large enough to provide accurate readings.This guitar ruler tool set is not only suitable for electric guitars, but also can be used for other stringed instruments that require calibration or repair work, making it a necessary tool set for professional luthiers and DIY enthusiasts.Each package comes with two measuring tools, a for checking the straightness of the guitar neck and the other for accurately measuring the fretboard.Guitar Leveling Digital Ruler Luthier Tool Ruler. Neck Curvature Measurement Easy Installation. Guitar Neck Straightness Measurement Tool. Tool Set Musical Instrument Part Calibration. Guitar Making Repair Maintenance Tool Reset.