NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: micrometer sextants.
From: Frank Reed
Date: 2007 Oct 27, 22:51 -0400
From: Frank Reed
Date: 2007 Oct 27, 22:51 -0400
Check editions of "Brown's Nautical Almanac" for this period. I have copies from 1930 and 1936. By 1936, all of the sextants advertised have micrometers. In 1930, the use of the micrometer is explained in several ads. It is listed as an optional accessory that can be ordered for any sextant for two pounds (factory installed). One ad shows a high-end vernier sextant that has a micrometer drum, too. A perfect example of a transitional instrument. -FER http://www.HistoricalAtlas.com/lunars --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---