metric to english conversion

[Chris Morriss]

In message <v01510100b37ce62ef06e@[204.132.128.4]>, Greg Hermann
<bearbvd at sni.net> writes
>>But we CAN'T go metric.  All the football and baseball fields would have to
>>change.
>>
>>Gary Derian <gderian at oh.verio.com>
>>
>>>
>>> I grew up outside the US, with the metric system, and I can't believe
>>> how hard we make life for ourselves here in the USA by sticking to the
>>> English system, which even the English don't use any more!
>>>
>>> -John Carri
>>>
>
>Given all of the bureaucratic nonsense that ISO has come up with, I'm just
>as glad for us to have a system of units that is insulated from idiotic
>French bureaucracy and "world" politics!!  IMO , USS, SAE, and NPT thread
>standards are generally better designs that ALL of the various DIN, JIS,
>French, and Italian metric thread junk. Also, the inch (and both numerical
>and decimal fractions thereof) are VERY much more practical scale units for
>machine work and tolerancing than mms. ever will be, thank you very much.
>
>Regards, Greg
>
>
It's true that all cars sold in Britain are now using metric threads,
but that doesn't mean that they are better.  The old UNF and UNC thread
pitches were ideal for either nut and bolt fastening (UNF) or for coarse
pitch studs in aluminium castings (UNC).  The standard range of metric
fastenings (here in Europe anyway) are to coarse for one job, and too
fine for the other.  I believe that there is a greater range of thread
pitches used in Japan though.
-- 
Chris Morriss