1. The Sundial TELLING TIME IN ANCIENT ROME

2. The Passage of Time Romans first used the sun’s movement to measure the passage of time Using this method, they could only precisely measure sunrise, midday, and sunset Used the length of shadows to estimate other times of day

3. Introduction of the Sundial Travelers from Sicily brought the sundial to Rome in 263 B.C. Was set up in the Forum Other sundials were set up in public buildings or squares

4. Sundial enabled the Romans to divide the day into 12 equal parts, or hours Hours became a way to mark time and meetings