Megalithic Yard

A Megalithic Yard (MY) is a unit of measurement of about 2.72 feet (0.83 m), that some researchers believe was used in the construction of megalithic structures. The proposal was made by Alexander Thom as a result of his surveys of 600 megalithic sites in England, Scotland, Wales and Britanny. Thom also proposed the Megalithic Rod of 2.5 MY. As subunits of these, he further proposed the Megalithic Inch of 2.073 centimetres (0.816 in), one hundred of which are included in a Megalithic Rod, and forty of which composed a Meglithic Yard. Thom applied the statistical lumped variance test of J.R. Broadbent on this quantum and found the results significant, while others have challenged his statistical analysis and suggested that Thom's evidence can be explained in other ways, for instance that the supposed megalithic yard is in fact the average length of a pace.