independent line of sighting

independent line of sighting

[‚in·də′pen·dənt ¦līn əv ′sīd·iŋ]

(ordnance)

A system for laying a gun, whereby the angle of site and the angle of elevation (range) mechanisms work independently of each other.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.