Torquetum
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The torquetum or turquet is a medieval astronomical instrument for taking and converting measurements made in three sets of coordinates: horizon, equatorial, and ecliptic. It is characterised by R. P.
Torquetum (1568), made by Johannes Praetorius in Nuremberg
Engraving of a Torquetum
Detail from The Ambassadors, a 1533 painting by Hans Holbein the Younger
Analog computer
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An analog computer or analogue computer is a type of computation machine that uses physical phenomena such as electrical, mechanical, or hydraulic quantities behaving according to the mathematical pri
Torquetum
…is characterised by R. P. Lorch as a combination of Ptolemy's astrolabon (Greek: αστρολάβον) and the plane astrolabe. In a sense, the torquetum is an analog computer. The origins of the torquetum are unclear. Its invention has been credited to multiple figures, including Jabir ibn Aflah, Bernard of Verdun and Franco…
A page from the Bombardier's Information File (BIF) that describes the components and controls of the Norden bombsight, a highly sophisticated optical/mechanical analog computer used by the United States Army Air Force during World War II, the Korean War, and the Vietnam War to aid the pilot of a bomber aircraft in dropping bombs accurately
TR-10 desktop analog computer of the late 1960s and early 1970s
Analog computing machine at the Lewis Flight Propulsion Laboratory c. 1949
Heathkit EC-1 educational analog computer