It has been shown that the exterior measurements of the 'Great' Pyramid of Giza are an accurate representation of the Earth's’ northern hemisphere on a scale of 1:43,200.
[link to www.world-mysteries.com
A number that proves highly significant when one considers the method of doubling/halving the numbers that was used in ancient Egypt (kemi)
25,920 years / 12 = 2,160 (x 2 = 4,320)
In relation to this, it has been pointed out that the possibility may exist whereby the numbers expressing the Precessionary cycle (Approx' 26,000 yrs), when viewed as fractals may be translated into the 60-based system of degrees (26° 00' 00"). Modern pocket electronic calculators have a key (DD>DMS) for this function.
The Platonic Year of 25,920 yrs would produce the following numbers:
25.92 (doubled) = 51.84 where, 51.84° is 51° 50' 24".
In other words, the angle of inclination 51° 50' 24" would express the decimal number 51.84°, which is the fractal expression of double the 25,920 Platonic Year number (25920 x 2 = 51840).
This would mean that the angle of inclination cited by Piazzi Smyth for the Great pyramid of Ghiza of 51° 51' 14" would reflect the decimal number 51.85399° or the fractal halved to that of 25,926.995 years (51,85399/2=25,926.995). A number which appears at very least, an extraordinary coincidence considering the astronomical references to the pyramid throughout history.