backsight
Definition from Wiktionary, the free dictionary
Contents |
[edit] English
[edit] Etymology
[edit] Noun
backsight (plural backsights)
- 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.
[edit] Verb
backsight (third-person singular simple present backsights, present participle backsighting, simple past and past participle backsighted)
- (surveying) To shoot a backsight.
