High Quality--With rounded edge, stainless steel, prevent scratching or cutting, durable and long service lifeWide Application-Suitable for measuring all kinds of electric guitar, electric bass guitar, acoustic guitar, acoustic guitar, electric box guitar fretboard measured in radians, radians for adjusting strings piano codeWith 12th fret string action conversion scheme on one side. With scale to measure cord height, bridge saddle height, saddle gap depth, sill gap depth and nut height. Suitable for accurate action measurements for guitar, ukulele, bass, banjo, mandolin and other stringed instruments. Versatile measuring tools, thrust distance, saddle height and depth, sill groove depth. This is your guide to repairing your guitar. Every serious player must have a tool. Color: SilverMaterial: Metal + Material Package Contents:1x Baroque Guitar Measuring Principle1x Bass Radian Measuring Ruler (9 Pieces)1x Guitar Polishing Cloth (Random Color)Random Colors Cannot Be SelectedOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.