NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: U.S. government sextant specification
From: Paul Hirose
Date: 2003 Jan 10, 12:17 -0800
From: Paul Hirose
Date: 2003 Jan 10, 12:17 -0800
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
