The ranks of the Cheops (Kheops or Khufu) pyramid were measured for the first time by the scholars who took part in the expedition of Egypt led by Bonaparte, namely Jomard & Cecile, and “Le Pere Coutelle”. The English Egyptologist Flinders Petrie carried out precise measurements at the north-west and south-east corners of the pyramid, published in 1883. The French Egyptologist Georges Goyon carried out new measurements, published in 1978.
Cheops pyramid 