NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: recommendation for slide rule ?
From: Dave Walden
Date: 2009 May 20, 20:05 -0700
From: Dave Walden
Date: 2009 May 20, 20:05 -0700
Here's 15 slide rule steps to do Bygrave. I'd call it a tie with Gary's 16 counting his first two as really one. The T (tangent) scale gets a little confusing at angles above 45. line up T with D, set cursor at d on T move t on red S to cursor move corsor to index on S line up T with D, read y on T at cursor: =>y calculate Y=y+90-Lat: =>Y set cursor at t on T set index on cursor move cursor to red y on S move Y on red S to cursor read red T at right D index: =>AZ line up T with D, move cursor to red Az on S move index on T to cursor move Y on T to cursor move cursor to value at index on DI line up T with D, read Hc on T at cursor: =>HC --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
File: 108342.seccscformula.xls
