On Mon, 21 Apr 2008 18:55:22 +0700, Bruce in Bangkok
wrote:

That was not a sextant. It was called an octant.

Here's one:

http://www.icarusbooks.com/images/1458.jpg

I've got no idea what that thing you referenced is but I can assure
you that the devices carried aboard aircraft, at least until the
1970's was called a "Bubble Sextant" and didn't look a thing like your
picture.

Yes.

http://www.warbirdsite.com/museumnavigation.html

http://www.nautical-products.com/bubble-sextants.html

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

http://www.qmss.com/seastories/seastory05.html