NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Jeremy C
Date: 2012 Aug 13, 10:26 -0700
Hello Alex,
Yes, it's a cargo ship, 150 meters long. Here's a photo: https://www.flickr.com/photos/37977699@N00/7773991564/
The clone seems to have improved on the original as there is no such paint on this sextant. There is also no maginifier for the micrometer drum either. I've never used an SNO-T, although I have held one once. Sadly it was broken and I couldn't use it, and I remember little about it.
The sextants I prefer (C&P and Tamaya) have vernier scale of 0.1 and 0.2 respectively on the micrometer drum. With these sextants I can interpolate to the accuracy of the respective sextants (about 10" of arc for each) by eyeball with a known error of the markings at 0.1' or 0.2'. With the Freiberger, I know it to the nearest minute and have to eyeball it to the nearest 0.1'.
For most observers, this is plenty good enough as the conditions under which they shoot are not as favorable as a large ship. Over thousands of observations, my average sight error is 0.8' and that is within the markings of the Freigberger, so I want more precision than what it offers.
I am linking a photo of the drum. What would you say that it reads?
B/Rgds,
Jeremy
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