NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Drum Sextants
From: Bill B
Date: 2005 Jun 15, 20:31 -0500
From: Bill B
Date: 2005 Jun 15, 20:31 -0500
> I've also noticed that some Plath sextants don't include a little vernier > scale for reading off tenths of minutes. But in practice, I find that this > matters relatively little. I can read to 0.2 minutes (which is as good as it > gets, in my practical experience) with or without the vernier scale. If I recall correctly, Alex's SNO-T has no gradations for tenths on the vernier section of the drum. Just a swing in magnifying glass. Placing a value on the line between the limiting marks is up to the user. Bill
