Clocks and Watches Websites

History of the clock and how Americans have measured time and been affected by it.

Concise history, background, definitions and operational information regarding atomic clocks.

Concise description using drawings and animation to show the operation of a pendulum clock.

Assistance for collectors, owners and enthusiasts of vintage wrist watches, identification and authentication of watches, catalog.

Reviews, concise history, interesting facts and news about mechanical watches.