Water clocks were some of the earliest clocks used. The earliest one was found in the tomb of the pharaoh Amenhotep I. Water Clocks were like pots made of stones, with long slanting sides that allowed water to drip down at a constant rate through a small hole in the bottom.

The Pyramidal structures are unique Egyptian gifts (Egyptian Inventions) to the world. The first pyramid was the Step Pyramid at Saqqara that was built in 2750 B.C. for King Zoser. Pyramids stand as elegant symbols of Egyptian civilization.

The shaduf was a very useful device (Egyptian Inventions) that the Egyptians built to help them with their water and the Nile River. It was operated by hand and was used to lift water from the river onto land in buckets.

It has a long pole and there are two objects at each end of it. On one side, there is a bucket. On the other, there is a weight. The Egyptians would lower the bucket, and allowed the water to flow into the bucket. Then they would drop it, causing the weight to lift it back up so they could retrieve it.

Locks were another making of the Egyptians. These were made to prevent the endless robberies. They made a wooden crossbar that was almost entirely enclosed except for some space for the key and the pins.

They dropped these pins into cavities, which locked the door. To unlock it, they put the key into the opening, which pushed the pins out of the way, enabling the door to open.