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Subject: Re: U.S. government sextant specification
From: Paul Hirose (paulhirose@XXX.XXX)
Date: Fri Jan 10 2003 - 15:17:53 EST
Jared Sherman wrote:
>
> In my limited experience I have never met a sextant that provides for a means of disengaging the gear rack while in storage, as this spec calls for.
>
> The requirement for accuracy of +-8 seconds along the entire arc would seem to exceed that guaranteed by any manufacturer, even C&P only guarantee 9 seconds for the Horizon Ultra.
By "coincidence" the C. Plath Navistar Classic is accurate within 8
seconds.
Compare the language in the spec with this nautical vendor's
description of the C. Plath sextant. The features and phraseology are
suspiciously parallel.
On the other hand, the commercial bubble attachment is a 3x22, not a
2.5x28 as required by the government spec. Anyone know the figures for
the military surplus ones Celestaire is selling?
http://www.navstore.com/pdf/glms%20pg%2016.pdf
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