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Date: Wed, 27 Dec 1995 08:38:40 -0500 (EST)
From: jkg@cc*.ga*.ed* (Jim Greenlee)
To: gmiiii@in*.co*, mauricio@va*.EN*.de*.co*
Subject: Re: [Q]: What is a "spool" ?
Cc: techdiver@terra.net
> >in real life we don't use reels for this purpose, we
> >use spools. A spool can not jam, hence the term "safety" spool.
> 
> Pardon my ignorance, but my english vocabulary is not that big. Can
> someone please describe a "spool"?

"Spool" is an acronym that stands for Simultaneous Peripheral
Operations On-Line. It is typically used ...

(sorry, wrong context :-)

A "spool" in this context is a cylinder with plates on the ends that
line is wound around for storage - it can be a spool of thread (like
for sewing) or a spool of wire (like for electrical work).  In cave
and wreck diving, it is the part of a "reel" that spins as you reel
in or out.

What George is referring to above (as a "safety" spool) is nothing
more than a plastic wirespool from which the wire has been removed
and replaced by nylon line. The ones that I have seen are about the
size of a 3" safety reel, but with a largish hub (that you can get
your fingers into easily). I'm not sure how much line they typically
wind on them (I'd guess 50-100 feet).

You use them as you would a normal reel, except that your thumb and
middle finger serve as the spindle on which the spool turns. A brass
clip is used to tie the spool off and keep it from unwinding once it
is in place.

-JimG

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