50pcs Plastic String Action Pitch Ruler Gauge Tool in/mm for Guitar Bass Firtz

1. scale of rule:80mm 2. The classical guitar 12/14 chord distance preset value (Classic Guitar) 3. 4/5/6 string Beth 12/14 chord distance preset value (Bass Guitar) 4. The electric guitar 12/14 chord distance default * limit (Electric Guitar Low) 5. The electric guitar 12/14 chord distance default * upper limit value (Electric Guitar High) 6. The ballad guitar chord length 12/14 product default value (Acoustic Guitar)