As with the other drawings I need an individual to confirm if the following measures derived from Petrie's data are correct.



Note:
a) There is a small step at the north end of the Queen's passage where it intersects with the ascending passage...that is the center point of measure.
b) The three-point circle drawn in the descending passage has its center equal distance from all three sides formed by the two passages...eliminating any suggestions as to point of reference.

Best.
Clive