(intransitive) to equalize / (transitive) to cause something to equalize

A surveyor's instrument for measuring differences of level by means of a telescope resting in a Y-shaped support.

(surveying, archaeology) A graduated rod used by surveyors to measure differences in level.

plural of sea level

plural of spirit level

(electronics) Describing a circuit or component whose output is sensitive to changes of the inputs only so long as the clock input's signal is high.

(statistics) The probability that a measured quantity will fall within a given confidence interval.

(of two contestants) equal (having the same number of points, or being in the same position)

plural of air level

A spirit level.