| 摘要 |
A tuning device for use with a guitar. The tuning device has a knob including a large diameter portion and a small diameter portion, which are cylindrical and have different diameters. The small and large diameter portions are coaxial with each other. The large diameter portion is located closer to the head of the guitar than the small diameter portion. The large diameter portion has a peripheral surface defining a fine adjustment portion. The small diameter portion has a peripheral surface defining a quick winding portion. The fine adjustment portion and the quick winding portion enable efficient and facilitated tuning.
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