Egyptian mathematician and archaeologist Assem Deif knows that the dimensions of the Great Pyramid of Giza, denominated in royal cubits, reflect the pi relationship, but he doesn’t know why the base perimeter of the GP is half a nautical mile (based on timekeeping), and he doesn’t know why the length of the royal cubit was established as 20.632 inches, nor does Franz Gnaedinger, who posted at the Drexel Math Forum that (very interestingly) the length of the meter is the length of six royal cubits divided by pi, but what he and Deif don’t know is that the ancient royal cubit, and the ancient greek foot, as well as, the modern meter, are all subdivisions of the dimensions of the earth, with 5 greek stadia of 600 ancient greek feet each equaling the base perimeter length of the GP, and as the base perimeter length of the GP is half a nautical mile (1/7,200th of the earth’s radius), we see that the ancient greek and egyptian measures were based upon the same system of earth measurement by the slow wobble of the earth’s axis, manifesting as the apparent movement of the constellations along the horizon through the years in a counter-clockwise direction (as the earth wobbles in a clockwise direction) at 72 years/degree.

I certainly hope you refer Deif and Gnaedinger to article #2 at http://IceAgeCivilizations.com, to see how the ancients measured the earth by the measured rate of precession, integrated with simple hexagon geometry, with subdivisions therefrom to establish the length of the modern kilometer (1/40,000th of the earth’s circumference), as well as, the ancient greek mile (10 stadia) and the modern nautical mile, both 1/21,600th of the earth’s circumference, which is twice the factor by which the earth’s circumference was subdivided to establish the base perimeter length of the GP, 1/43,200th of the earth’s circumference, so you can see that earth measure (geo metry) is the key to the metrics in the ancient world, as in the modern world.

Gnaedinger’s insight that Napolean Bonaparte’s expedition to, and survey of, the Giza plateau structures, most notably the GP, resulted in the calculation for the length of the meter (six royal cubits divided by pi) is a new twist on these matters for me, very interesting to now realize, as that length, multiplied by 1,000, equals a kilometer, which is 1/40,000th of the earth’s circumference, a nice round number because of the pi relationsip having been manifested in the GP, as 280 royal cubits (the GP’s height), divided into 880 royal cubits (half the GP’s base perimeter length) equals pi. Read on here under category Ancient Navigation, to see how this all makes sense in terms of ancient history, navigation, and the origins of metric systems.