*This article first appeared in Ride UK (#83) and is reproduced here by kind permission of Ride UK.
When the ancient Egyptians were laying out the great pyramid at Giza over four and a half thousand years ago they had little more than bits of wood and string to help them lay it out. And yet they got all four sides bang on the four compass points and the lengths of the sides accurate to better than 0.1%. Time has taken its toll on the outer skin but it is still dead square and straight…
