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Re: The humble orienteering compass as emergency sextant
From: David Pike
Date: 2022 Dec 30, 12:30 -0800
From: David Pike
Date: 2022 Dec 30, 12:30 -0800
Joseph Rheubeck you wrote: This picture may help.
Joseph
Yes Google is full of photos like that. The rear has a 'poor mans' cosine and co-tangent table on the drums. I was thinking more about inside. Is there a spirit level, or do you simple measure the angle between two points? Maybe it depends upon the model. Also, the calculations in the instructions only make sense if they're using specially calibrated scales, which might also differ from model to model. Re: sailing: You'd be struggling to measure star altitudes above 45°. DaveP
