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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: International Date Line and Earhart/Noonan
From: Gary LaPook
Date: 2022 Feb 6, 15:51 -0800
From: Gary LaPook
Date: 2022 Feb 6, 15:51 -0800
Noonan used Pioneer octant serial number 12-36, the twelfth on manufactured in 1936.
At that point it was called a Mk 3. It was also called the A-5 at some point. The A-7 has an improvment over the A-5 in that it has a taller adjustment knob incorporating a white surface and a pencil marking lever which allows the determination of the median of a series of sights. It is also very convient to use because the eyepiece can be swiveled ninety degrees right and left.
https://sites.google.com/site/fredienoonan/topics/pionneer-octant/octant.jpg?attredirects=0
http://fer3.com/arc/imgx/A-5---A-7-Manual-1-of-2.pdf
gl
