Torquetum

The torquetum or the turquet is a Measuring instrument medieval Astronomique conceived to take and convert the measurements made in three whole of coordinates: horizontal, equatorial, and ecliptic.

The torquetum (twisted) made it possible to calculate the position of celestial bodies and to fix the hour and the date. This instrument made up of discs and plates was abandoned when Galileo had the idea of the " Telescope ".

Such an instrument was described by Ptolémée - 1st century of the Christian era.

A torquetum can be seen on famous table the Ambassadors (1533) of Hans Holbein the Young person.

Painting shows most of the details of the inscriptions on the disc and half of disc, which compose the top of this particular kind of Torquetum.

External bonds

details of table '' the Ambassadors ''.

torquetum

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