Torquetum

A torquetum is a middle age era observing and calculating device. It allows the observer to measure a star’s or planet’s location in one of three different coordinate systems. One is the observers point of view relative to the horizon(both parts closed), the second is relative to the earth’s equator (Tabula Equinoctialis is set to the observer’s latitude), and the third is relative to the planetary ecliptic (Tabula Equinoctialis is set to the observer’s latitude and Tabula Orbis Signorum is propped up with the Stilus). It seems excessively complicated to use to make measurements and is probably more useful as an analog computer for converting measurements made by other devices to one of the other coordinate systems without doing the spherical trigonometry.

Some of the adaptions allow for 3-D printing such as raised lettering and markings so that the top couple of layers can be printed in a different color by pausing the print and changing filaments. Other changes have been made to a