71188 Musical Instrument Accessories Feature: 100% new brand and high quality. Different guitar string positions for reference. Easy adjustment and more intuitive display. It can measure the width of the fretboard, the groove of the piano code, etc. The printing is clear and will not scratch the guitar. The color is clear and easy to recognize. Description:Material: pvc Size: 8.5*5.4cm/3.34*2.12inColor: As picture shownPackage Included: 1 X Guitar Accessories Gauge RulerNote:1. Please note that due to lighting effects, monitor's brightness/contrast settings, etc. There may be slight differences in the color tone of the website photo and the actual position.2. Please allow 1-3cm differs due to manual measurement. (All measured in cm, and please note 1cm=0.39 inch 1 inch=2.54cm), your understanding will be highly appreciated.