|
trigonus: triangular element in the type of altitude dial known as the 'organum Ptolemai'.
|
tripod base: base of a tripod (three-legged support) on which to stand an instrument.
|
tripod legs: legs of a tripod (three-legged support) on which to stand an instrument.
|
tropic of Capricorn: line of geographical latitude and corresponding line of declination coinciding with the sun's position at the autumnal equinox, its most southerly position in the sky.
|
tympanum: Latin name (plural tympana) for a latitude plate of an astrolabe.
|