GNR3 Stainless Steel Measurement Bass Guitar Neck Ruler, Style: Double Teeth+Leveling Ruler+String High Ruler Features: 1. Instrument measuring tools, do not hurt the instrument 2. Made of high-quality metal, strong and durable, suitable for long-term use 3. Double scale design, notched straight edge design, suitable for most guitars 4. It is suitable for checking the flatness of guitar neck and the flatness of fingerboard and strings 5. Straight edge design, easy to use Double teeth: 1. Material: stainless steel 2. Product list: guitar neck ruler 3. Size: 420x 37x 2.5 mm 4. Weight: 0.25 kg Double teeth + string high ruler: 1. Material: stainless steel + plastic 2. Product list: guitar neck ruler + string high ruler 3. Size: 420x 37x 2.5 mm 4. Weight: 0.33 kg Double teeth + leveling ruler: 1. Material: stainless steel 2. Product list: guitar neck ruler + leveling ruler 3. Size: 420x 37x 2.5 mm 4. Weight: 0.25 kg Double teeth + leveling ruler + string high ruler: 1. Material: stainless steel 2. Product list: Guitar Neck Ruler 3. Size: 420x 37x 2.5 mm 4. Weight: 0.35 kg