Cubit
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The cubit is an ancient unit of length based on the distance from the elbow to the tip of the middle finger. It was primarily associated with the Sumerians, and the Egyptians. The term cubit is found
Cubit rod of Maya, 52.3 cm long, 1336–1327 BC (Eighteenth Dynasty)
The Nippur cubit-rod in the Archeological Museum of Istanbul, Turkey
Nilometer
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A nilometer is a structure for measuring the Nile River's clarity and water level during the annual flood season in Egypt. There were three main types of nilometers, calibrated in Egyptian cubits: a v
Measuring shaft of the nilometer on Roda Island, Cairo built in 861 AD on the orders of the Abbasid Caliph al-Mutawakkil
Nilometer shown c.1800 at the southern tip of Roda Island
Palermo Stone, 5th Dynasty (2392 B.C.E-2283 B.C.E)
Conical structure covers the nilometer on southern tip of Roda Island in the Nile River at Cairo. The structure is modern but the nilometer dates from 715 AD.