NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Centring Error Detector
From: Örjan Sandström
Date: 2014 Jan 23, 10:18 -0800
From: Örjan Sandström
Date: 2014 Jan 23, 10:18 -0800
Uhm, i think you are both talking what I have been taught is Hirth Rings, accurate to better than 2 arcseconds and repeatable to 0.5 arcseconds.
A set of 720 tooth rings (two for each indexing platform) should do well as sextant test platform, add a autocollimator and you are set
should make short work of testing each degree to VERY accurate value, better than the readout of the sextant at any rate.
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