The horizontal cross section of the pyramid is square at any level, with each side measuring 229 m (751 ft) in length. The maximum error between side lengths is astonishingly less than 0.1%.
The reasons of five error sources including vertical axis, horizontal axis, sight line coder, TV undershooting value which can result in TV tracking system errors are analyzed.
The article analyses the effect of the error of horizontal lathe's guiding rails on the horizontal level and vertical level on the processing error of the work-piece.