MARINE 18" ANTIQUE TELESCOPE WITH LEATHER COVER BY NAUTICALMART SIZE: 18 inches. A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century, using glass lenses. They found use in terrestrial applications and astronomy. The offered telescope is made of good quality brass and leather. It has an excellent magnifying power and comes with a beautiful leather case. It can be used as a beautiful item at home and office or can be used as functional piece. Additional Details ------------------------------ Package quantity: 1