From: Chris Padilla (email@example.com)
Date: Tue Mar 07 2000 - 17:25:08 PST
(1,000 apologies for bombarding the SI-LIST with this but I couldn't
resist. It is often strange/funny where "standards" come from!)
The US Standard railroad gauge (distance between the rails) is 4 feet, 8.5
inches. Anyone know why?
I won't bore you (and use up BW) with the long story but suffice it to say
that it is about the width of 2 horses' behinds....
At 03:09 PM, you wrote:
>My understanding is that 1/16" was the thickness of one ply of plywood, and
>that the original PCB lamination machines were based on plywood laminators.
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