Description No matter how expensive the musical instrument is, no matter what kind of musical instrument, it needs regular maintenance and inspection, so as to ensure that the musical instrument is in a good performance state for a long time. And our guitar string ruler is a very professional guitar measuring tool, and it is your best choice. Features -Color: Silver, golden -Material: aluminum -Size: 10.30X5.20X0.20cm/4.05X2.04X0.08in - Our rulers are made of durable and wear-resistant aluminum materials, which can meet your long-term use needs. -It can be used as a necessary tool for proper adjustment of guitar truss bars, very practical. -Designed to check the straightness of fingerboard guitar neck, this guitar string ruler is very practical. -Lightweight and compact, you can carry it with you conveniently in your guitar bag. -It will be a perfect gift choice for your friends who are guitarists or guitar lovers. Package List2 Guitar String Rulers