NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: EBBCO/filters
From: Michael Daly
Date: 2007 Nov 22, 02:27 -0500
From: Michael Daly
Date: 2007 Nov 22, 02:27 -0500
Peter Fogg wrote: > I have doubts about that, given what > generally low quality scopes they attach to the things. I suspect they go > for sufficient neutral (more or less neutral, that is) density and that's > that. To expect more could be unrealistic. Given that a 4 1/2" x 5 1/4" glass shade is only $2.10 retail at the local welding shop, I don't think that using a few one-square-inch shades (at 10 cents per) on a sextant is particularly extravagant. In polycarbonate, they run about 12 cents per sq. in., retail. Still cheap and quite tough. Mike --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
