NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Bob Goethe's Mark 2 slide rule design
From: Noell Wilson
Date: 2022 Dec 19, 13:23 -0800
From: Noell Wilson
Date: 2022 Dec 19, 13:23 -0800
Ok. I messed up on the T3 scale. I just looked at the left hand end of the scale and thought it duplicated the ST scale. It doesn’t.
Ignoring the overlap, the T3 scale on the left hand end is actually 5.7 degrees (with the complement of 84.3 something. But the T3 scale decreases to the right. At first glance, it looks like you read the values on the 1/x scale. But I can’t make T3 match either the 1/x or the D scale over its entire length. The complement of the listed angles don’t seem to match either.
I don’t understand the T3 scale.
Regards, Noell
