sight unit

sight unit

[′sīt ‚yü·nət]
(optics)
A compact sighting device composed of an elbow or panoramic telescope, mount, or adapter, usually used for pointing a weapon for direct or indirect fire; it may be attached to, or used in conjunction with, a weapon rocket launcher, or the like.
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References in periodicals archive ?
The day and thermal sight unit can be moved independently of the weapon.
That may be why some operators run into problems with the integrated sight unit (ISU) on their Bradleys.
You'll be better able to see what you're shooting TOWs at if you clean the integrated sight unit (ISU) lenses weekly.
In Britain, Pilkington offers weapon sights and observation devices based around the Kite, a small sight unit that can be configured to produce the MaxiKite with increased image magnification and the corresponding Bino-Kite and Maxi-Bino-Kite for observation purposes.
Part Recoverability Item NSN Number Code TOW II basic sight 5855-01-217-2353 13160758 D assembly (BSA) Hybrid BSA 5855-01-389-8884 13265516 D TOW II periscope 1240-01-256-6913 13225608 D head assembly Bradley eyesafe laser 1240-01-463-4581 13225608-1 D rangefinder (BELRF) periscope head assembly TOW II integrated 1240-01-216-6331 13160659 A sight unit (ISU) BELRF ISU 1240-01-425-5164 13492497 D
That started to change with the introduction of diminutive and rugged systems such as the British United Scientific Instruments Sight Unit Infantry Trilux (Suit) and its current derivative the Susat (SA -- Small Arms) used with SA-80.
providing the launcher with a sight unit which allows the injection of a video or computer-generated picture of a target, followed by the simulation of a missile's flight as it would be seen in the sight picture.
If the doors for your Bradley's integrated sight unit (ISU) swing open too far, you could be headed out the door when it comes Io the ISU.
A combination light/laser sight unit solves that problem.
The rear sight unit rides in dovetail grooves cut directly into the spring cylinder, and the notch is located too close to the eye for a sharp sight picture.
The hand-guard will accommodate a Picatinny rail that will house the United Scientific Instruments L9A1 Sight Unit Small Arms Trilux and Pilkington Optronics' Common Weapon Sight, in addition to the Qioptiq Maxikite Night Sight.