sh,
es,
Yeah, but they won't go into imperial holes. BTW, isn't Whitworth an entirely separate standard from the "standard" imperial standard? I seem to recall that Whitworth was not used much by the time my brother's MGA was made. Looking at Wikipedia they say the thread for mounting cameras to tripods is a Whitworth.
Is Whitworth still used much?
Rick
Yes - at least in camera bottoms.
Otherwise, it is so coarse that it is time to follow the dinosaurs.
I'm not too fond of French inventions, but the metric system is quite practical, especially as the Germans have put some order into it (DIN = Das ist Norm).
-- Tauno Voipio tauno voipio (at) iki fi
imperial standard?
Nope, there is no such animal as that last.
Thats just plain wrong.
Depends what you call much. Certainly most pom industry has sunk beneath the waves now.
Yes. It's a pity they didn't manage to get rid of 1 day = 24 h * 60 min/h * 60 s/h (though they tried)
The sixty-based time and angle system is probably the oldest mathematical heritage still in everyday use.
It comes from the 60 -based number system of old Sumerians.
-- Tauno Voipio tauno voipio (at) iki fi
Yes. This, in turn, seems to derive from 12-based number systems. Twelve is the number of phalanges in the four fingers of one hand (the thumb of the same hand being used to count them). You can count five consecutive rounds of twelve using the four fingers plus thumb of the other hand to remember each round. Thus, 12 * 5 = 60. Of course, this is all speculative. If we had four phalanges in each finger, instead of three, we would be more fluent in hexadecimal :-)
standard imperial UNC and UNF ? BSW (whitworth) BSC (whitworth for cycles, obsolete) BSP (UK plumbing, and AUS, NZ etc.. ) NPT (US plumbing)
other than camera mounts I know of no new equipment that uses it.
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Hardware shops still sell loads of whitworth most gutter screws and nuts are still whitworth for instance
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