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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: Alexandre Eremenko
Date: 2025 Sep 2, 12:38 -0700
From: Alexandre Eremenko
Date: 2025 Sep 2, 12:38 -0700
Can you give any links where some particular protractor is called "left-handed" or "right handed"? Perhaps with a picture?I own one of them, and have seen many pictures, and I did not spot any difference (they all look remarkably similar, independently of the country of production).
The thing looks completely symmetric and a mirror image will look exactly the same, including the scale, except a very small difference in position of the central arm. I cannot imagine what difference this small deviation from symmetry could make.
Here are two photos of my protractor:
Alex.
