sighter
/ˈsaɪtər/
noun
- A person who sights something, such as a target or a landmark.
- The sighter called out the coordinates of the enemy position.
- The experienced sighter spotted the whale first from the boat.
- In archery, the sighter helps adjust the bow's aim.
- A device or part of a device used for aiming, such as on a firearm or telescope.
- He attached a laser sighter to his rifle for better accuracy.
- The telescope's sighter needed calibration before use.
- The crossbow came with a simple metal sighter.