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The objective lens sits at the end of the telescope. Unlike the builder's level, the transit level also moves vertically 45° in either direction. The horizontal circle is marked at each degree and has measurements up to 360°. Like the builder's level, the telescope on a transit level moves horizontally around a complete circle. The telescope, including the locking levers, is located at the top of the transit level. Located at the viewing end of the telescope, it can be turned to bring the crosshairs into focusĮntire upper part of level, including telescope and supports, leveling vials, spindle and circle-reading device The area level attaches to tripod - has spirit level ensuring base is level when attaching transit levelĬan be turned to make objects appear crisp and clear Moves around main scale determining vertical angular readings too small to read on main scaleĪllows adjustments to be made to ensure the instrument is level in all positions

Marked by degrees, used for setting and reading vertical angles Holds the instrument in horizontal position when tightenedĬan be adjusted to make the instrument move left or right on the horizontal plane Marked by degrees, used for setting and reading horizontal angles Moves around main scale determining horizontal angular readings too small to read on main scale Used to block sunlight from affecting objects being sighted

The transit level itself consists of many parts: The basic setup of a transit level consists of the actual transit level, a tripod base, a tape measure, and a calibrated rod. They are used to establish a reference line, but they are also used to provide readings of angles in precise measurements. Transit levels are used mainly for surveying and building, but they can be used to determine the relative position of lines and objects as well. View all optical levels from Johnson Level.Ī transit level is an optical instrument, or a telescope, complete with a built-in spirit level that is mounted on a tripod.