Earliest records show a spoon shaped compass made of ... markings of the heaven's plate around its circumference, in a simplified form. The inner circle had the eight trigrams and the outer circle the ...

A thumb loop will help you hold your compass steady when shooting an azimuth. Using a compass accurately requires precision, so take all the help you can get. You can’t earn a Purple Heart in ...

The combination of an integrated compass, inclinometer and distance laser gave measurement professionals the best possible azimuth accuracy — and mapping-grade precision — no matter the angle it was ...

it’s much simpler to build a plate solver in this situation. That doesn’t mean it’s impossible to star hop with a telescope like this, though; alt-azimuth mounted telescopes like Dobsonians ...

Specifications include an accuracy to 1° azimuth, a 0.1° resolution, tilt-compensation up to ±60°, 0.1° resolution for roll and pitch, and a 50-kg shock rating. The compass also features a ...