Fascinating stuff...I have obviously become one of those pilots that has forgotten more than most people know - ( see amusing link in Rumors and news. how many hours..... -) ..still, I think the brochure mentioned 15,000 feet, and the speed was in MPH for the sensibilities of the average punter. So, a nice compromise.
As for A/C, well having single handedly torn the replacement unit out from a house that was being demolished, (dodging bricks and a big pointy thing that was smashing through the walls,) there was little technical data available, except that it was a certain ratio bigger that the gasping unit in my Texas home. A recent 95F and 95% rh prompted me to get on with it.
Having not been able to find the answer, of course as soon as I posted, I found the tons as an equivalent of BTH...so, if I can find my old Aristo, I'll equate the figure to a cube of cold water.
Thanks all. LR