[AT]was Transmission oil, now systems

[Larry D. Goss]

Nominal sizes (sizes in name only) will always be with us regardless of
the actual size of the item, Mattias.  We will always call "dimension
lumber" by its nominal size, such as 2 by 4, 4 by 4, etc, but the actual
sizes of the wood haven't been measured that way for decades and the
standards by which the wood is milled are based on metric measurements.

Good Grief!  It's at about this time of year when I used to have to
lecture to my students about trimmed and untrimmed formats for drawing
papers in the inch system and the A-series and B-series progression of
paper formats for ISO.  All of us are still dealing with that dichotomy
and the problems it brings.  Most likely everyone who is reading this
message has at least three formats possible on the printer that's hooked
to their computer -- letter, legal and A4.  And those formats are
nominally in two different measurement systems but are actually
manufactured to just one. 

That brings up a question -- What is the measurement system used for the
sizes of US currency and postage stamps?  It may be time to do some
Googling.

Larry

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Mattias
Kessén
Sent: Tuesday, September 05, 2006 12:37 AM
To: Antique tractor email discussion group
Subject: Re: [AT]was Transmission oil, now systems

All that being said, it seems that most of the "made in China" items I
buy
have inch size bolts and nuts.  Maybe that is just how Harbor Freight
specs
it out. ?? Dunno

Here it is in mm when it comesfrom China. Remember I have an american
car
and an english tractor and some old stuff so I use a lot of inch
threaded
nuts and bolts. Pipethreads were measured in inches for a long time even
here and some of my workers still uses terms like three inch pipes and
even
I do when it comes to lumber.

Mattias
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