|
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.
|
latitude projections: projection of altitude and azimuth lines on to the equatorial plane, see article on the astrolabe.
|
level: name for different types of instrument used in surveying for determining the horizontal direction and differences in height, and in gunnery and elsewhere for adjusting something to the horizontal. See also gunner's level.
|