Instrument Errors - Instrument Errors of a Total Station

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Instrument Errors of a Total Station Ideally, the total station should meet the following requirements: a) Line of sight ZZ perpendicular to tilting axis KK b) Tilting axis KK perpendicular to vertical axis VV c) Vertical axis VV strictly vertical d) Vertical-circle reading precisely zero at the zenith 18 | Instrument Errors If these conditions are not met, the following terms are used to describe the particular errors: a) Line-of-sight error, or collimation error c (deviation from the right angle between the line of sight and the tilting axis) Line-of-sight error (c) (Hz collimation) b) Tilting-axis error a (deviation from the right angle between the tilting axis and the vertical axis) Tilting-axis error (a) V V K Z K Z c a


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