Compact and portable for easy carrying. Features multiple calibrations on both sides for measuring spacing with versatile functions. **Details:** - Weight: 5g - Size: 8.5x5.4cm / 3.34x2.12in - Suitable for measuring guitar, bass, and other instruments **Front Functions:** 1. 80mm scale 2. Classical Guitar 12/14 chord default setting 3. 4/5/6-string Bass 12/14 chord default setting 4. Electric Guitar 12/14 chord lower limit setting 5. Electric Guitar 12/14 chord upper limit setting 6. Acoustic Guitar 12/14 chord default setting **Back Functions:** 1. Measures fingerboard width (40mm, 42mm, 45mm) and string pitch 2. Measures fingerboard width (38mm, 41.5mm, 43mm) and string pitch 3. Measures fingerboard width (50mm Classic, 45mm 5-string Bass, 38mm 4-string Bass) and string spacing 4. Measures fingerboard width (52mm Classic, 42mm/40mm 4-string Bass) and string spacing **Material:** Plastic **Color:** As shown **Package Includes:** 1 x Guitar Ruler *Note:* Slight color variations may occur due to lighting and display differences. Measurement tolerance: +/- 1-3cm.