bluebrassmonkey.livejournal.com ([identity profile] bluebrassmonkey.livejournal.com) wrote in [community profile] insertmeathere 2010-01-16 10:55 pm (UTC)

Well, I suppose I should answer my own question, eh?

When I thought up "BlueBrassMonkey", I recalled an old nautical term (although the theory is somewhat still debated). The word "brass monkey" refers, in this sense, to a device added to the binnacle (which holds a ship's compass) to compensate for magnetic interference. It features a pair of Kelvin spheres (or "balls") mounted on a pair of arms, usually made from a brass alloy to avoid magnetic interference with the compass.
Another theory for this device involved a triangular contrivance to hold a warship's cannonball shot in place when cannons were not in use. Early devices were made of brass and...

As we all know, brass and many other metals expand and contract in fluctuating temperatures. Hence the line "freeze the balls off a brass monkey".

Blue? Well, that's obvious, now innit?

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