Related Clues:

• Rotary phone feature
• 'Don't touch that ___!'
• Push-button forerunner
• Old radio part
• Numbered circle
• Thermostat feature
• Push-button alternative
• Tune in
• Lock feature
• Use an old-fashioned phone
• Place a call
• Push-button precursor
• Thing a host might warn you not to touch, after 'that'
• Panel reading
• I-XII place, perhaps