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Posted by Doug Miller on February 8, 2005, 4:27 pm
>That's not it. Robertson bits/screws are denominated in metric. We use
>Imperial measures. Except for spark plugs, of course.
Huh?
1) Robertson screwdrivers are denominated as #0, #1, #2, #3, etc just like
Phillips screwdrivers. Metric has nothing to do with it.
2) Robertson screws come in the same variety of sizes and lengths as any other
screw, and are denominated in exactly the same fashion, e.g. a 6-32 x 3/4"
machine screw.
3) Metric dimensions and labelling have not proven to be an impediment to the
importation, manufacture, and use in the U.S. of plenty of metric bolts and
wrenches.
4) The spark plugs most widely used in the U.S. have 5/8" or 13/16" hex heads.
--
Regards,
Doug Miller (alphageek at milmac dot com)
Nobody ever left footprints in the sands of time by sitting on his butt.
And who wants to leave buttprints in the sands of time?
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Posted by SteveB on February 8, 2005, 11:08 am
>
>>That's not it. Robertson bits/screws are denominated in metric. We use
>>Imperial measures. Except for spark plugs, of course.
>
> Huh?
>
And adjustable wrenches. I don't believe I've ever seen a metric adjustable
wrench.
Steve ;-)
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Posted by xrongor on February 8, 2005, 4:39 pm
> And adjustable wrenches. I don't believe I've ever seen a metric
> adjustable wrench.
>
> Steve ;-)
they got em in france...
randy
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Posted by Edwin Pawlowski on February 8, 2005, 7:27 pm
>>
>
> And adjustable wrenches. I don't believe I've ever seen a metric
> adjustable wrench.
>
> Steve ;-)
I have one that proudly states it is 250 mm. It is about 10" long.
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Posted by Terry on February 9, 2005, 8:52 pm
>>
>>>That's not it. Robertson bits/screws are denominated in metric. We use
>>>Imperial measures. Except for spark plugs, of course.
>>
And engines; e.g. 3.5 litre gasoline, 7 Litre Caterpillar Diesel etc. and
metric tonnes, and .............!
Ah well; we'll catch on in another generation or so!
Robertson (square) drives must be catching on? It was only a few years ago
that a friend, manager/owner of a company that manufactured and shipped
power equipment told me that certain US specs for his equipment clearly
required "All screws must be Philips or Straight".
Personally have always found Robertsons convenient and powerful; possible to
put a screw on the end of the square driver and apply it with one hand at
almost any angle including straight down, horizontal etc. Recent convert to
using construction screws and a power/drill driver. Robertsons work very
well.
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