Application: Guitar measuring set,suitable for electric guitar,acoustic guitar,bass,mandolin,banjo,folk guitar. About Ruler Size: The size of guitar fret ruler is about 152x12.5mm/5.98x0.49inches. Portable: These measuring tools are portable and ligh in weight,easy and convenient to carry. The guitar measuring tool is Stainless Steel,the set is anti‑oxidation,not easy to damage. Straight Design: The straight side of the fret ruler is designed for most electric guitars or acoustic guitars.