These high quality reproduction Telescopes are replicas of the original Telescopes used by mariners over the ages and The are made of the finest Brass. Telescopes make exciting nautical gifts and executive presents to anyone who loves the sea. Telescopes have played an important roll in navigational history, because at the start of the Eighteenth Century navigation and chart mapping of the oceans started to take on more importance. It was essentialy to have a telescope on board every ship to enable it to navigate by site in the busy port and harbour entrances. Later these types of telescope was then placed on shore in the port or harbour entrance's to observe the shipping entering and leaving the harbour.