NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Dalton E6B Dead Reckoning Computer
From: Renee Mattie
Date: 2008 Aug 1, 06:09 -0700
From: Renee Mattie
Date: 2008 Aug 1, 06:09 -0700
I saw an old Weems and Plath Dalton E6B at Bacon's and snapped it up. Imagine my surprise to see that they are still making these things, and offering them for sale at http://www.mypilotstore.com/MyPilotStore/secp/22. I could have gotten one new ($12.95) for less than I paid at Bacon's ($15.00), and the last page of the manual wouldn't have been a jigsaw puzzle of yellowed and crumbling paper. Ah, well, the heavy leather case is still in fairly good shape. Here's the thing that surprised me about my new old E-6B. The moving parts are off-center. On the slide-rule side, the grommet seems to be off-center. So if I set the dial for 60 miles/hour, I'll apparantly go almost 18.1 miles in 18 minutes, though almost exactly 9 miles in 9 minutes. So the slide rule is good to probably about half a percent, which is not quite as good as my cheap plastic high-school slide rule (which went missing 20 years ago). On the vector plotting side, there is a little slop in the inner ring, but the center point seems to generally be a quarter degree West of the center line at 200mph, or a full degree West at 60. Have I got a good one or a bad one? Thanks Renee --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---