I was watching "The Nostradamus Effect" episode - "doomsday hieroglyphs" the other day. I was shocked when they began speaking about (no names mentioned) of those who believed that measurements of the giza pyramid to predict the end of the world. They showed charts and how that scenario hit 1914 to a certain part, then the entire measurements end at september of 2011.
Anyway for anybody wanting to understand the pyramid measurements russel used to backup the 1914 date and that all witnesses believed in his time, check out that episode. They don't mention the jw's or russell but the entire logic and thinking of that 1914 w/ the pyramids is fully explained there.