[Milsurplus] Unknown thing

[D C *Mac* Macdonald]

Here are instructions for use of the astro-compass.
 
http://www.pge.com/includes/docs/pdfs/about/edusafety/training/pec/toolbox/tll/appnotes/astro_compass.pdf

As you can see, the eBay offering is incomplete.
 

73 - Mac, K2GKK/5
(Since 30 Nov 53)
Oklahoma City, OK
(ex-USAF Navig8r)



----------------------------------------
> From: Telegrapher at att.net
> To: Milsurplus at mailman.qth.net
> Date: Tue, 26 Jan 2010 17:21:00 +0000
> Subject: [Milsurplus] Unknown thing
>
> You cockpit guys know what this is for sure?
>
> 220544338546
>
> Larry
> W0OGH