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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: Erik A
Date: 2025 Sep 4, 07:24 -0700
From: Erik A
Date: 2025 Sep 4, 07:24 -0700
Alex, it's a question of which of the two outside arms is capable of closing with the center arm (0°) and which can only close to about 10°-11°. Holding the instrument with the legs pointing away from you If the two on the left can close completely (0°), then its "left-handed." If the two on the right can close completely (0°), then it's "right-handed." Why being able to set angles smaller than 10°-11° on the "disfavored" side would be necessary or important enought to justify having both instruments available is still an open question.
