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From: "Michael A. Terrell"
Subject: Re: OT Standard Panel Sizes?
Date: Sun, 08 Dec 2002 16:26:59 -0500
Organization: Have you seen my bench? No, really! Where is it?
X-Mailer: Mozilla 4.61 [en]C-CCK-MCD (Win95; U)
References: <email@example.com> <3DF18783.38471AB0@mfi.net>
Ken Smith wrote:
> In article ,
> Bob Wilson wrote:
> >That's exactly what it is. As others have alluded to, the standard vertical
> >increment (or "U") in a 19" panel system is 1.75". The system itself is a
> >typical North American abortion of weird units and rather irrational
> >dimensions. The 19" refers to the total width of the mounting flanges. Most
> >companies have standardized on the actual shelf itself being 17" wide.
> Since it started out as a "relay rack" I'm sure the dimensions actually
> made a lot of sense for the size of relays that were being put in the rack
> way back then. Today we are stuck with a standard dimension that no
> longer relates to what we are putting in it.
> >When the Europeans (like Schroff) tried to come up with a standard rack
> I'm sure that if the Europeans had come up with a standard, 60 years from
> now people would be cursing it for not fitting the "quantum field
> generators that every transmat system uses"
> Standards always seem to out live what they relate to. There is a long
> and perhaps true story that ends with the punch line about the distance
> between the rails on a train being based on the width to two horses rear
> firstname.lastname@example.org forging knowledge
It doesn't matter. Bob just has to bitch about anything that came
from the US.
Michael A. Terrell
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