Archaeoastronomy in the British Isles - The Stones and the Stars: Building Scotland's Newest Megalith - page 84

F IG . 4.23 (Continued)
In general, British prehistory has welcomed this authoritative
downgrading of Thom's work by someone with similar survey-
ing and mathematical skills….
Essentially this author's position is that Ruggles devised
a method of resurveying Thom's sites which, although it had
the praiseworthy aim of being objective (avoiding identifying
standing-stone-indicated horizon markers in astronomically