Astrolabic quadrant posters & prints

Forms of astrolabe in use for surveying, 1650 Unknown

Astronomical quadrant John Bird

Quadrant for Stellar Measurements Anonymous

Using astrolabes to calculate the height of a steeple, 1539 Petrus Apianus

Quadrant for Stellar Measurements Anonymous

Astronomical quadrant John Bird

Gilt brass planispheric astrolabe Jean Naze

Astrolabe, Arabian navigational instrument, 11th century Unknown

Astrolabe, Early 18th cen Anonymous

16th-Century Astrolabe Anonymous

Terrestrial globes with equators, poles, eliptics and quadrants Abraham Robertson

Astrolabe, Second half of the16th cen Gualterus Arsenius

Astrology: Various Instruments and Diagrams Giorgione

Cruger's azimuth quadrant A Steck

Navigators using an astrolabe in the Indian Ocean, c.1410-12 Boucicaut Master

Amerigo Vespucci finding the Southern Cross constellation with an astrolabe Philipp Galle

Illustration Depicting Quadrants Anonymous

Astronomical instruments at the Imperial Observatory, Peking, China, c.1900 French Photographer

Mural quadrant at the Royal Observatory, Greenwich Francis Place

Tycho Brahe's mural quadrant Anonymous

Illustration of Bird's Quadrant Anonymous

Arabian astrologers Anonymous

Print of Arabian Astrologers Examining the Sky from In Somnium Scipionis Ambrosius Macrobius

The Astrolabe in Pack-Ice, 1838 Auguste Etienne Francois Mayer

Astronomy, 1649 Laurent de La Hire or La Hyre

Surveying, from Levinus Hulsius Instrumentorum Mechanicorum, Frankfurt-am-Main, 1605 Levinus Hulsius

P.P. Leseur and Francois Jacquier in Rome, 1772 Louis Gabriel Blanchet

Takyuddin and other astronomers at the Galata observatory founded in 1557 by Sultan Suleyman Turkish School

Portrait of the Astronomer Marco Basaiti

Natai, a Maori chief from Bream Bay, New Zealand Louis Auguste de Sainson

Surveying, early 17th century Unknown

Surveyors using quadrants to measure the height of a tower, c1617-c1619 Robert Fludd

Wooden Quadrant Used In Nativagation Anonymous

A Young Astronomer, ca 1685 Olivier van Deuren

Measuring the distance from ship to shore, using a quadrant marked with shadow-scales, 1598 Unknown

The Octagon Room at the Royal Observatory, Greenwich Francis Place