backsight

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Contents

[edit] English

[edit] Etymology

From the back + sight

[edit] Noun

Singular
backsight

Plural
backsights

backsight (plural backsights)

  1. The rear sight of a firearm.
  2. (surveying) A measurement or reading taken back towards a point of known elevation, used to calculate the height of the theodolite.
  3. (surveying) A measurement of a previously shot point, used to set the angle to zero when occupying a new position.

[edit] Verb

Infinitive
to backsight

Third person singular
backsights

Simple past
backsighted

Past participle
backsighted

Present participle
backsighting

to backsight (third-person singular simple present backsights, present participle backsighting, simple past and past participle backsighted)

  1. (surveying) To shoot a backsight.

[edit] See also

In other languages