The string action ruler has precise engraving and complete and clear scales which you can accurately measure and set your guitar.It is lightweight and portable and you can put it in your pocket and carry it with you.It is made of high quality PVC material which is durable and long time to use.The length of the string pitch ruler is 85mm, the width is 54mm, the height is 0.7mm.It is suitable for string instruments such as guitar, bass, mandolin, etc.Item Name: String Pitch RulerMaterial:PVCSize:8.5cmx5.4cmx0.07cm/3.35inx2.13inx0.03inNotes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X String Pitch Ruler