I watched a documentary about the modern British Navy where they were using yards for the ship's guns but the ground troupes were using meters. I'm going to guess that all the naval artillery tables and calculations would have to be redone to convert to metric. I remember that the older ships have mechanical computers to calculate trajectories and it would be quite a chore to refit those old ships. ^_^
TDD
Note that the Navy also uses nautical miles for surface distance (and yards for torpedoes). All of the conversions are trivial for the few times they're necessary. Certainly easier than the entire service changing. The same is true for domestic use of FPS. With calculators and computers, it's even more true.
You can't teach an old Swabby new tricks. Perhaps the reprogramming of a sailor's brain is more difficult? ^_^
TDD
Perhaps, when things get tense and lives are on the line, you want training to take over and actions to be automatic.
The Daring Dufas posted for all of us...
And I know how to SNIP
Can you tell what size my nuts are? Besides small...
No, but one of mine swelled to the size of a baseball. ^_^
TDD
Subatomic?
Michael A. Terrell posted for all of us...
And I know how to SNIP
Hmm, I haven't noticed them glow yet...
That would require the extra large atoms, and more than two .
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