It was also the case in the 1970s.
It came under "airmanship" rather than rule following per se.. "Master altimeter" is certainly a military (RAF) term, at least I've never heard it used/written in the civilian world in the last twenty two years since I handed back my blue uniform.
For those who haven't experienced it before, remember that just because you have been used to one way of doing things, it doesn't mean to say all the other ways are wrong, eh?
