[Milsurplus] Unknown thing

[jmfranke]

It is an astrocompass.  One use is to determine compass variation or 
declination.

John  WA4WDL

--------------------------------------------------
From: <Telegrapher at att.net>
Sent: Tuesday, January 26, 2010 12:21 PM
To: <Milsurplus at mailman.qth.net>
Subject: [Milsurplus] Unknown thing

> You cockpit guys know what this is for sure?
>
> 220544338546
>
> Larry
> W0OGH
>
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