General > General Technical Chat
why is the US not Metric
vk6zgo:
--- Quote from: soldar on November 16, 2019, 08:08:13 pm ---
--- Quote from: vk6zgo on November 16, 2019, 12:24:07 pm ---They are commonly known as "AF"(across flats).
...
Metric spanners are "across flats", too, but we don't call them "AF".
--- End quote ---
Originally spanners/wrenches were denominated with the size of the thread, not by the size of the head. Then they realized it made more sense to use the size of the head "across flats"
--- End quote ---
Whitworth spanners use the thread diameter, as does the nearly extinct "BSF".
I think Whitworth will be with us forever, as India churns them out like sausages! ;D
--- Quote ---Kind of the same thing with pipes. Nominal 1/2" pipe thread has a diameter of 0.8125" because the denomination is not the measure of the thread but of the inside diameter of the standard pipe with that thread. These days pipes walls are thinner so in a 1/2" pipe nothing measures 1/2".
--- End quote ---
KL27x:
vk6zgo:
"But that that was you! (Re: imperial vs dry gallon)"
My bad for accidentally aiming this comment toward you by virtue of my reply. You were just the last person to have posted when I did, and I probably commented to something you said.
In reality the "imperial vs dry gallon" thing was a reference to a couple of previous posts needlessly making a crack on imperial. TBH, I don't know who posted them, and I don't care. I am not trying to track them down for 'Murican vengeance. I just wanted to show how silly it is to make this an issue, to whoever is posting this kind of thing. And maybe it is just me being sensitive. But I find it hard to believe these lame jokes are actually funny to even the other members of the metric brotherhood.
schmitt trigger:
500 posts and this thread is still counting!
boffin:
--- Quote from: schmitt trigger on November 18, 2019, 02:10:49 pm ---500 posts and this thread is still counting!
--- End quote ---
I'll sum up:
Q: why is the US not Metric?
A: Arrogance
KL27x:
America is basically metric, already, in any way that matters to other countries, other than:
1. How americans communicate distances to each other
2. Car market, re odomoter/speedometer.
And this is not the reason Peugot's do not sell like hot cakes to America.
In UK, they still drive on left side of the road, for christsake. But OMG, these speed and distance meters make it too expensive for trade? OK, yeah, keep dreaming. You think changing the speedo will double the cost of the car (Ok, that's too close to true when talking about a Peugot, maybe).
Canada. Another country that officially changed to metric and now has superiority complex. This complex seems to be only major change to these newly metric countries.
--- Quote ---A:Arrogance.
--- End quote ---
It is not arrogance if it is justified. Keep providing proof that your country is represented by idiots.
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