An article in Marine Insight helps us understand the working principle, readings and maintenance of a Marine Sextant.
What is Sextant?The sextant is an instrument used to measure angles. Mainly used at sea, the tool is so named because its arc is one-sixth of a circle – 60 degrees. It adheres to the principle of double reflection hence it can measure angles up to 120 degrees.
Practically speaking, the arc of the sextant is a little over 60 degrees and therefore the total angle measurable is about...