Copy of a brass and iron azimuth quadrant, which has by tradition has been associated with the Danish astronomer, Tycho Brahe. Made around 1560, it was first owned by Wilhem IV, Landgrave of Hesse, Germany. The original is now at the Royal Museum in Kassel (Staatliche Museen Kassel). Made by Elkington and Company after the original was displayed at the Special Loan Collection of Scientific Apparatus in the South Kensington Museum in 1876. Replica of quadrant used by Tycho Brahe, 1560-1565 1560-1565