The Great Pyramid of Giza is a well known ancient structure which has been extensively surveyed, and the dimensions of its internal architectural features are well established. The original surveying data of the building's architecture was published in the 1800's and the surveying of the pyramid's narrow shafts, which was carried out between 1992 and 2013 using robotic inclinometers, was published in online documents and CAD drawings.

By comparing the original surveys of the pyramid, which contain details of the shafts' start and end points, with the modern robotics surveys it is determined that the two sets of data contain a vertical discrepancy of 1.4 m at the point where the upper northern shaft meets the pyramid's northern face and a vertical discrepancy of 0.67 m on the corresponding point on the south face. It is shown that these discrepancies are partially caused by a calculation error in one of the original surveys which has then been duplicated in all subsequent works, and partially by an erroneous assumption in the recent robotics survey.

By resolving the calculation error in the original survey of the building it is determined that the position of the internal architecture of the building has been incorrectly surveyed in relation to the central vertical axis of the pyramid and the ground level and that a correction to the position of the internal architecture relative to the external architecture is required.

By resolving the erroneous assumption in the modern surveying of the upper northern shaft it is determined that this shaft is not continuous from its lower to upper point and that the architecture in the lower portion of this shaft is significantly different from the currently accepted design.