Using the interior measures from G1’s north side to the center of the Queen’s pyramid and comparing to the external distance from G1 to G3 in the north-south plane demonstrates the designer’s ability to measure pi to a greater accuracy than 1/1000th of its true value…unless Petrie erred.


North-south distance of 29112” divided by (2xPi) equals 4633.3” and equal to the diagonal distance of the Queens chamber to the northern side of G1. (4632”)

Best.
Clive