1731-1806 Benjamin Banneker Surveyor Naturalist
A free African-American almanac author, surveyor, naturalist, and farmer. Part of the survey of the original boundaries of the District of Columbia, using a clock he maintained to relate points on the ground to astronomical positions.
"Around 1753 at about the age of 21, Banneker reportedly completed a wooden clock that struck on the hour. He appears to have modeled his clock from a borrowed pocket watch by carving each piece to scale. The clock purportedly continued to work until his death. "
(xHistory xPOC xBlack xAfricanAmerican xNaturalist xSurveyor)