An illustration of a Roman Numeral clock showing five o'clock (5:00).

Clock 5:00

An illustration of a Roman Numeral clock showing five o'clock (5:00).

Watch belonging to Martha Custis Washington (June 2, 1731 – May 22, 1802), the wife of George Washington, the first president of the United States. Although the title was not coined until after her death, Martha Washington is considered to be the first First Lady of the United States. During her lifetime, she was simply known as "Lady Washington."

Martha Washington's Bridal Watch

Watch belonging to Martha Custis Washington (June 2, 1731 – May 22, 1802), the wife of George…

A typical pocket stop watch used for timing.

Stop Watch

A typical pocket stop watch used for timing.