Related Clues:

• Contrast or volume, on old TVs
• Radio component
• Turner on a TV
• Cabinet drawer opener
• Part of a stereo player
• It'll open doors for you
• One who is paid not to be sharp
• Door handle
• Dresser-drawer handle
• Door or drawer doodad
• Means of adjustment
• Radio feature, sometimes
• Tuning device
• Piano repairman, perhaps
• Opening piece