On 3/11/2011 5:46 PM, Frank Gosebruch wrote:
Hi,
does anybody know how to use an RAF aircraft bubble sextant like that:

http://www.ebay.de/itm/230691175519?...84.m1555.l2649


or where to download a manual?

At least some more information in using the instrument?

Thanks
Frank
http://www.physics.uq.edu.au/physics...ant_manual.pdf