https://www.academia.edu/35053330/STONE ... VALIDATION
Peter Harris has updated his ideas on the academia website.
The unit is 14.142 inches an excellent approximation of root 2 and the unit works with the imperial system and the system Thom discovered at the Aubrey circle Stonehenge
It is a complex unit and an example of how these units were curtailed to make them more accesible than the repeating infinite units.
The unit is 99/7 x 16499 / 16500 = 14.142
99/7 = 14.14285714 repeating infinite unit of 4.5 x 22/7.
To use this unit at the aubrey circle Pi as 22/7 needs to be amended to 22/7 x 16499/16500 = 3.142666667 ( infinite number single repeating pattern.)
There is a proof of the Harris and Stockdale Megalithic foot of 14.142 imperial inches.
Multiply by 4 to get the square
divide by 9 and multiply by 10 to get the escribed circumference around the square
Divide by the adjusted version of pi as 22/7 = 22/7 x 16499/16500 = 3.14266666r
62.85333333r / 3.1426666r = 20
So the circle radius is 10.