HI Don,


According to Petrie, the west side of G3 is 105.51m long, and if its similar to the east side, azimuth = +0.206 degs


A - B is then ~38cm (15") - ~ 0.73 of a cubit.


If the mean azimuth (+0.234 degs) of the sides is used, then A - B = 43cm (17") - ~0.82 of a cubit.


Petrie's survey estimates the length of a side of Menkaura's pyramid as 105.5m (~201.5 cubits), but thought it most probable the sides were designed to be 200 cubits long (Petrie 1883: 204). M&R thought that due to the lack of certainty for the exact length of the sides, 200 cubits was also the most likely length. (M&R, Part 6, 1967: 96)


If the sides were originally 200 cubits long, and the azimuth about +0234 degs then A - B = 43cm (17") - ~0.82 of a cubit.


A - B is somewhere around 35 - 45 cm - about 0.7.....0.9 of a cubit, so although it cannot be known for certain, your 0.762 of a cubit is well within this range.


CT