I've never seen any of the TF assembly manual online, but if you can be more specific on what measuremnets you need for what model I could prolly scan the page for ya - there's many pages, one or more for each model
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics