IMPA 370331/370332/370333/370334 Nautical Sextants
A sextant is an instrument for measuring the angle between two objects by bringing into coincidence to the eye of the observer, rays of light received directly from one object and reflected from the other.Its principal use is to measure the altitudes of celestial bodies above the visible sta horizon. Available in various types. When ordering, please specify the type of telescope (magnifying & lens diameter).