Description This is a guitar measuring ruler, specially designed for guitar repair and self-inspection, made of premium plastic materials. It can help you measure the level and vertical distance of each part of the guitar and whether the height is consistent. Features -Color:White -Material: Plastic -Size: About8.55X5.40X0.06cm/3.36X2.12X0.02inch - At the same time, it is also a good choice to give it to friends who study guitar with you. - This ruler set has smooth edges, no incisive and convex parts, and won't scratch your guitar. - Premium material is used, which is wear-resistant, durable and corrosion-resistant, and keeps your guitar in a perfect state at any time. - Various calibrations on the positive and negative sides can measure various spacing and have complete functions. - It can help you form a perfect guitar and play a better timbre.Package List1 x Guitar String Gauge Ruler