s/n4216963

Information
has gloss	(noun) an optical instrument for aiding the eye in aiming, as on a firearm or surveying instrument sights
lexicalization	eng: sights
subclass of	(noun) an instrument designed to aid vision optical instrument
has subclass	(noun) a sighting device in an aircraft for aiming bombs bombsight
has subclass	(noun) a sight used for aiming a gun gun-sight, gunsight

Links
has part	(noun) combination of lenses at the viewing end of optical instruments eyepiece, ocular
part of	(noun) a portable gun; "he wore his firearm in a shoulder holster" piece, small-arm, firearm
part of	(noun) an instrument used by surveyors surveying instrument, surveyor's instrument