* The double-sided action gauge ruler, which can be used to measure the height of the string saddle, string height, saddle groove, and the height of the fret groove and nut * Small size and light weight guitar string action gauge measuring ruler, easy to carry around and accurately measure your strings * Chord action gauge measuring ruler for double-sided measurement, with conversion tables for fractions, decimals, measurement and other units at the back, easy to use. * This guitar string action gauge measuring ruler can make the measurement faster and more accurate, saving time and tools * Guitar string action gauge measuring ruler made of high-quality plastic material, strong and wear-resistant, durabl. Specifications: Size: Approx. 8.5 x 5.4cm / 3.3 x 2.1inch Weight: Approx. 10g Material: Plastic Color: As shown Package Included: 1 x Guitar String Action Gauge Ruler