Just to add to the discussion – when I was about 13 my Dad took me out in some fields near our house with a compass that had a sight line on it (kind of a flip up thing with a thread in it). We created a map of the area by creating triangles sighted onto trees, hilltops, etc. You’d sight the direction of a tree on a hill … mark it on the map … then sight another landmark and measure the angle between the two. Then you’d pace to the first landmark, and repeat the process to landmark two and your original starting place. We created a pretty good map just with the compass and our feet!
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