MJ Thomas 2 Wrote:
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> How 'correct' do you want the measurements to be?

Only need your measures as set out by Petrie...how they fall is dependent on the interpretation and setting out of Petrie's work.

> Are you going to allow for the differences in, for
> example, the horizontal location of the top and
> the bottom of the Queen's Chamber doorway?

MJ:
Thanks for these clarifying questions.

Reference to:
1) The base of the QC north wall at floor level.
2) The QP is approximately 6" lower at the north end for approximately 52" of its length. The point where it meets the AP floor, as described by Petrie, is used for the center of the drawn circle.

> I may be jumping the gun here, but why are you
> ignoring the physical reference points of the
> DP/AP floor line intersection,

I believe I explained...however:
There are four points that can be used for referencing.
1) end of ascending passage floor
2) end of ascending passage roof
3) extended length of the ascending passage floor to the descending passage floor
4) extended length of the ascending passage roof to the descending passage floor.
All four would give a variation of +/- 40+ inches from each other.
Whatever is selected would be questioned as to why over the remaining three points.
Petrie used the extended floor measure for practicality reasons, I elected to use none of the above.
I used the average distance from all three reference points of this intersection: the AP floor, AP roof and the DP floor. That mathematically satisfies all possibilities.

From these three points I measure 1524" to the Queen's chamber and 1522" to the illustrated central intersect point of the passages.

> and the GG north wall/AP floor intersection?

I never even considered it...I'll give it a try and post the results. However, as it stands the distances illustrated are what I ask for confirmation.

Thanks again for the query.
Best.
Clive