English brass horary quadrant by William Rickett, dated 1786 ( 6 1/4-inch radius) with degree scale. English horary quadrant, 1786 1786
English brass horary quadrant (6 1/4-inch radius), signed Joseph Richards with degree, unequal hour and trigonometric scales and vovelle (planispheric nocturna) on reverse side. English horary quadrant, 1650-1725 1650-1725
Electrotype copy of a rectangular horary quadrant with shadow dial scale by George Hartmann, Nuremburg, Germany and dated 1549. Replica of German rectangular horary quadrant, 1549 1549
Arabic wooden horary quadrant (16 cm radius), with painted scales and cloth case by Mustafa Ayyub and dated AH 1143 (1730-1). Islamic horary quadrant, 1730-1731 1730-1731
Platinotype print of plate of horary quadrant, from "Margarita Philosophica", 1535, p. 1348 Platinotype print of plate of horary quadrant 1914
Electrotype copy of an Islamic horary quadrant in the Archaeological Museum, Madrid. The original was displayed at the 1876 Loan Collection Exhibition of scientific apparatus at South Kensington, London, see catalogue, p397, No.1775a; London (England); South Kensington Museum Replica Islamic horary quadrant 1876 (replica)