Alidade On Stand tax-exempt In the background is the

In the background is the Anglo-Dutch fleet

James Woodend 2014

From the Spanish edition of Ortelius's 'Theatro de la Tierra Universal'

"It's not always easy to see the Northern Lights in the moonlight

Alidade On Stand tax-exempt In the background is theA decorative antique brass style alidade would make a fantastic addition to any desktop. Alidades are sighting devices for determining directions used in surveying and (formerly) astronomy. Alidades were used during voyages of exploration to assist with accurate map making and reading. The Royal Museums Greenwich collection holds examples of alidades. View our full collection of replica instruments, including telescopes, sextants and compasses.