Keywords: Tycho-Brahe-Mural-Quadrant.jpg of the instrument Engraving from the book Tycho Brahe 1598 Astronomiae instauratae mechanica Wandsbeck Downloaded from the http //www kb dk/en/nb/tema/webudstillinger/brahe_mechanica/brahe_fsi html page 20 online exhibition at the Royal Library; stitching by Axel Boldt ~ 1598 author File Mauerquadrant jpg 3 134 × 4 600 pixels File Tycho Brahe's mural quadrant in Uranienborg png 579 × 787 pixels File Fotothek df tg 0005682 Astronomie Vermessung Messinstrument jpg 558 × 820 pixels PD-old-100 Uraniborg Quadrants instrument 16th-century engravings Tycho Brahe Astronomiae instauratae mechanica |