Hello Clive,

You write, ‘This indicates the builder's accuracy in measure to be 1/6th of a digit at best...right?’

The quality of workmanship in this Pyramid varies from place to place.
The finish of the walls of the King’s Chamber and the east outside face of the coffer, and the smallest division of the royal cubit being equivalent to 1mm suggests to me that the builders were quite capable of working stone to within 1mm of the required measurement.
However, that the quality of workmanship in this Pyramid varies from place to place strongly suggests that this was not always put into practice.


You write, 'Using the eastern wall width of the Qc (side with Niche) produces 20.57 inches.... Unless there is a specific reason why the Kc and Qc have different values... think white/red'

I am satisfied that to date there is no reason to suppose that the royal cubit used by the architect to design Khufu's entire pyramid was greater or lesser than 20.632"/524mmms.

If you work through Petrie's measurements of the entire Queen's Chamber instead of just its east wall near the base, then you will see that a royal cubit of 20.632"/524mm was used throughout its design (this equally applies to the Niche).

The east wall of the chamber is 205.61" wide.
But this does not mean that this Chamber wall was designed and built to be 10 royal cubits @ 20.561" wide
What it does mean is that the width of this wall at its base is equal to 9.966 royal cubits @ 20.632"

Changing the length of the royal cubit simply to make this wall a whole 10rc wide instead of 9.966rc wide is, IMO, completely wrong.
It is little more than altering the facts to fit a hypothesis.

Was this wall designed to be 10rc (@ 20.632" per rc) wide, but the builders erroneously made it 0.034rc/0.7" too short?
I don't think so.
I hypothesise that the east wall was designed to be 9.966rc (@ 20.632") wide, and that is precisely what its builders made it.

Regards,

MJ

I express royal cubits (rc) to 3 decimal places because 0.002rc = 0.04"/1mm
I know the AEs didn't use decimals but, well, have you tried expressing dimensions in Egyptian fractions - I've tried it, it's a nightmare!! and expressing parts of a royal cubit in palms and digits is not much better, either