Holiday Happenings > Big Brain Bang > Invention Evolution > The Telephone > Rotary Dial Phone
The rotary dial patent was granted in 1898. It made "self service" telephone calls possible. You no longer had to talk to Sarah to connect your phone line to another. The rotary dial allowed the user transmit the number of the telephone to which they wanted to connect. However, Sarah was still needed to make long distance calls. Nostalgic retro gift for the phone fan, engineer, history buff.