So, sometimes base 10 (1000 thou = 1 in), sometimes 12 (12 in=1 ft), the rest sounds mosly random. Best thing about metric system is that you know how the units are (always difference of ten with the following, as decimeter, centimeter, milimeter and it's easy to divide by ten. So, a person who is 174 cm height is 1.74 m. A person who is 68 inches...how much is in ft? or thou?
Anyway, my idea was not discuss the advantages or disadvantages of metric system, only to say that as it is not used in all the world is depressing that in TAW is still used. And yes, I know Victorian Era really used those units, but as I think it is set in our future I would expect another thing.
Still, did I mention I loved this book, right?