Levels - The Construction & Principal Uses of Mathematical Instruments
Maritime, Instrument, Radius Quadrant, Astronomy, Scientific, Italian – George Glazer Gallery, Antiques
Quadrant - The Madison Historical Society
Mariner's quadrant | Royal Museums Greenwich
Quadrant by Blaeu, 1662, Atlas Maior - CartaHistorica
History
CDP - Navigational Instruments
gunter quadrant; shadow-box | British Museum
Gunter's Quadrant – Zaytoun AlJundi
487 Quadrant Instrument Of Measurement Stock Photos, High-Res Pictures, and Images - Getty Images
14th Century astrolabic quadrant, the instrument combines Islamic design and French astronomical values. Dated 14th Century Stock Photo - Alamy
Quadrant (instrument) - Wikipedia
Sextant Navigational Instrument Quadrant Clip Art, PNG, 2099x2132px, Sextant, Area, Black And White, Celestial Navigation, Drawing
Quadrant - Ages of Exploration
Surveying quadrant, 1674. | Science Museum Group Collection
The quadrant was the earliest astronomical instrument converted for nautical use. It was used to determine the altitude of the Polestar or sun and, concurrently, the location of the ship in degrees