Azimuth quadrant posters & prints

Cruger's azimuth quadrant A Steck

Astronomical quadrant John Bird

Astronomical quadrant John Bird

Quadrant for Stellar Measurements Anonymous

Repeating altitude azimuth circle Edward Troughton

Quadrant for Stellar Measurements Anonymous

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

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

Wooden Quadrant Used In Nativagation Anonymous

Perspective View of the Altitude and Azimuth Instrument at the Royal Observatory, Greenwich, London, 1847 Anonymous

Illustration Depicting Quadrants Anonymous

Using a quadrant with a plumb bob to calculate the height of a tower by triangulation, 1551 Unknown

Illustration of Bird's Quadrant Anonymous

Surveying, early 17th century Unknown

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

Surveying, 1551 Unknown

Quadrature of the circle Unknown

Quadrature of the circle Unknown

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

Surveying, early 17th century Unknown

Title page of The Description and Use of the Sector by Edmund Gunter, 1636 Unknown

Surveying and timekeeping, 1551 Unknown

Johannes Hevelius, German astronomer, 1647 Unknown

Astrology: Various Instruments and Diagrams Giorgione

North Side of Quadrangle, Arundel Castle, Sussex Benjamin Brecknell Turner

Emanuel Hospital, Tothill Fields, 1850 Thomas Hosmer Shepherd

Mosquito Quadrille Peter A Ford

The Geographer Jan Vermeer

The Ambassadors (Detail), 1533 Hans Holbein the Younger

The Geographer Jan Vermeer

Portrait of Jérôme Lalande Jean Honoré Fragonard

Telescope from Selenographia Anonymous

Portrait of Nicolas Jarry Jacob Perkois

Portrait of John Hanning Speke English School