I have calculated this figure from the Weight, a Gorean unit of measurement based on the Stone, which is about four Earth pounds. A Weight is ten Stone. The Weight and Stone, incidentally, are standardized through the Gorean cities by Merchant Law, the only common body of law existing among the cities. The official “Stone,” actually a solid metal cylinder, is kept, by the way, near the Sardar. Four times a year, on a given day in each of the four great fairs held annually near the Sardar, it is brought forth with scales, that merchants from whatever city may test their own standard “Stone” against it.
The Gorean foot, interestingly, is almost identical to the Earth foot. Both measures doubtless bear some distant relation to the length of the foot of an adult human male. The Gorean foot is, in my estimation, just slightly longer than the Earth foot; based on the supposition that each of its ten Horts is roughly one and one-quarter inches long, I would give the Gorean foot a length of roughly twelve and one-half inches, Earth measure." ~Raiders of Gor, pages 127 & 128~