The 18th century small sundial compass measures 2.25 x 5". Through centuries of technological innovation, we've charted the whole world. But early navigators and explorers setting out didn't necessarily know were they were headed. Guided only by a simple compass, the stars of the night sky, early octants and astrolabes. Possibly terrifying, but also exciting. Discover early navigation, enjoy an unbelievable compass from a different era.