Celestial navigation with very little math

Learn how to find your position using a sextant and a custom slide rule, almost no math required! Since the dawn of time people have asked themselves: where am I and why am I here? This talk won't help you answer the why question, but it will discuss how determine the where in the pre-GPS age of sextants, slide rules and stopwatches by taking the noon sight, aka the meridian passage. The usual way to find your position using the Sun requires a large almanac of lookup tables and some challenging math. The books are frustrating to consult on every sight and the base 60 degree-minute-second math is frustrating even with a calculator, and if you're on a traditional ship it seems wrong to do traditional navigation with electronic devices. To speed up the process I’ve designed a specialized circular slide rule that handles most of the table lookups to correct height of eye, semi-diameter, temperature, refraction and index errors, and also simplifies the degree-minute-second arithmetic req