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95 to 104 of 227 glossary terms
horizon rectus: east-west line on an astrolabe latitude plate, see article on the astrolabe.
horizontal dial: sundial where the hour lines are marked on a horizontal surface, see article on the sundial.
hour lines: the time divisions on a sundial or other astronomical instrument.
hour ring: the part of a sundial marked with the time divisions, where this part is in the form of a ring or broken ring.
inclining dial: type of sundial projected as a horizontal dial for a particular latitude, but which can be inclined for use in a range of other latitudes.
Italian hours: system of hour reckoning, see article on time and date.
Jacob's staff: name for a cross-staff, especially when used for surveying, see article on the cross-staff.
Julian calendar: calendar introduced by Julius Caesar and used in Europe until the sixteenth century, or later, see article on time and date.
latitude: angle above or below the equator to indicate position on the earth. The celestial latitude, however, is an angular distance with respect to the ecliptic.
latitude plate: part of an astrolabe with a projection of altitude and azimuth lines on to the equatorial plane, see article on the astrolabe.
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