NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Metal 3-Arm Protractor "Handedness" (Station Pointer)
From: David Pike
Date: 2025 Sep 3, 14:13 -0700
From: David Pike
Date: 2025 Sep 3, 14:13 -0700
Erik A, you speculated "maybe this is just as simple as "you had to have both in case there was a tighter angle in play than one or the other version could handle?" . I doubt if that is the reason. Thinking in terms of 'cut' you wouldn't want a cut of less than about 30° between arms or you would need to do a lot of wiggling to produce a not very confident result. I'm afraid I only ever used tracing paper to assess radar photographs of simulated release points, but I did rather a lot of them, and I did my fair share of wiggling. DaveP
