I want to know the answer to the following question:
What was the most accurate clock-like device in the ancient world?
All the background I'm provided with is that "The most precise timekeeping device of the ancient world was the water clock, or clepsydra, one of which was found in the tomb of Egyptian pharaoh Amenhotep I (1525–1504 BC).". Is that enough to answer the question?
Answer: yes