| Definitions | | backsight |
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noun
- The rear sight of a firearm.
- (surveying) A measurement or reading taken back towards a point of known elevation, used to calculate the height of the theodolite.
- (surveying) A measurement of a previously shot point, used to set the angle to zero when occupying a new position.
verb
- (surveying) To shoot a backsight.
Etymology: From the back + sight
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Full Definition of backsight
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