quadrant sight

quadrant sight

[′kwä·drənt ‚sīt]
(ordnance)
Sighting instrument on a gun that is used in laying the gun in elevation; used in conjunction with a telescope, which lays the gun for direction.
References in periodicals archive ?
The lightweight, stand-alone launcher with a collapsable stock also features a leaf sight and quadrant sight.
1881 Vicci quadrant sight with a battlefield zero of 275 meters and a graduated range out to 2,000 meters.
The Vicci rear quadrant sight was unchanged as far as I know.
Both leaf sight and quadrant sight should be mounted on M203
All of the M203 grenade launchers (M203, M203A1, and M203A2) should be equipped with both the leaf and quadrant sights. The leaf sight is generally what's used most during firing because it's the easiest to use.
A battle sight, graduated from 50 to 250 metres is mounted on the hand-guard and a quadrant sight, adjustable for 50 to 400 metres, can also be mounted to the rifle's carrying handle.
A quadrant sight has been fielded for use with the AG36 and fire team leaders use the new PLR 15c Commanders Target Locating System, a 1500-metre range laser rangefinder, to provide the grenadier with the range to the target.
The Swedish Armed Forces have decided to procure a Quadrant sight system (QSS), to enable the mounting of a quadrant sight.
No handguard; leaf sight/rail grabber assembly that mounts on the M4 or M5 adapter rail system, carrying handle mounted quadrant sight, and mounting hardware (quick-release bracket)
Long handguard with leaf sight, carrying handle mounted quadrant sight,
Short handguard with leaf sight, carrying handle mounted quadrant sight, and mounting hardware (bracket assembly, screws, bushings, and lacing wire)