NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Bill Morris
Date: 2014 Feb 26, 21:50 -0800
Brad
You wrote <<And yes, we will be able to measure gear lash, and see just how the preload reduces or eliminates it. That can happen right now. Approach some angle from one side. Align the AC and zero it. Approach that same angle (by micrometer only) from the other side. Measure deviation with the AC. Alas, I do not own a micrometer sextant. Both of my instruments are vernier type. Have you done this experiment Bill?>>
Yes indeed I have, Brad. See "Chasing tenths of an arcminute " at www.sextantbook.com and http://sextantbook.com/2010/03/
I envy you your new acquisitions.
Bill Morris
Pukenui
New Zealand
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