The Great pyramid : observatory, tomb, and temple (1883)
Proctor, Richard A. (Richard Anthony), 1837-1888 · London : Chatto & Windus · leaf 149
d. At C^ is the centre of the square surface, whichthen formed the top of the structure. If postswere placed at the angles nav,^ s,w,^ s,e.y s.w., andalso at n., e.y s,y and zv.y an observer stationed at Owould have the cardinal and the mid-cardinal pointsexactly indicated. Now the point O is about… … THE PROBLEM OF THE PYRAMIDS, 139 the gallery and to the observer at O. All suchobservations as the easting, southing, westing, andnorthing of heavenly bodies would belong to theobserver at (9, uprights of suitable height beingerected at ;/., ^., ^., and w. He could also observewhen heavenly bodies…