10 Timepieces That Shaped Human History

10. Pocket Watches

9. Cuckoo Clock

8. Grandfather Clocks

7. Tower Clocks

6. Mechanical Clocks

5. Astrolabes

4. Hourglasses

3. Candle Clocks

2. Water Clocks

1. Sundials

10 Traditional Timekeeping Devices Uncovered