Captain Coincidence Episode 14

Captain Coincidence had been discussing the flat earth society and the use of theodolites to measure the curvature of the Earth. Captain Coincidence had only just mentioned the occupation with which you would normally associate a theodolite, but his brain farted and he forgot it when he next came to mention it. Stuck on a long "errrrrrm....", Captain Coincidence was forced to ask which occupation you would normally associate a theodolite with.
The conversation ended with a slurp of tea and the requirement of a fibre washer for some plumbing - this being another story all together.
Later, stuffed to the gills with Chinese food (which might raise some interesting questions as to Captain Coincidence's species), Captain Coincidence was watching 'Who wants to be a millionaire?', as the participant pondered the £250,000 question - that being "With which occupation would you normally associate the use of a theodolite?"
"What a coincidence!", thought Captain Coincidence.