Egyptian Merkhet, c.600 BC
The Egyptians used a star clock or merkhet to measure the time at night. They would use a pair of merkhets to line up with the pole star and mark out a north-south line. By using a water clock to measure the intervals between different stars crossing the line, they could keep track of the time. This merkhet belonged to an Egyptian priest called Bes, son of Khonsirdis, who was the Observer of Hours at the Temple of Horus in Edfu, Upper Egypt.
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