FSG 12 Fire Control Equipment

Question 1

What is Federal Supply Group 12?

Accepted Answer

FSG 12 is the Federal Supply Group (formally known as NATO Supply Classification Group NSG 12) in the USA for supply items codified in the category of Fire Control Equipment.

Question 2

What is NATO Supply Classification Group 12?

Accepted Answer

NSG 12 is the NATO Supply Classification Group (also known as Federal Supply Group FSG 12 in the USA) for supply items codified in the category of Fire Control Equipment.

Question 3

Which Federal Supply Classes are in FSG 12?

Accepted Answer

FSG 12 contains the following Federal Supply Classes (FSC) (formally known as NATO Supply Classification Class [NSC]): 1260,1240,1220,1290,1230,1270,1265,1250,1210,1234,1280,1285,1287

Question 4

Which NATO Supply Classification Classes are in NSG 12?

Accepted Answer

NSG 12 contains the following NATO Supply Classification Classes (NSC) (also known as Federal Supply Class [FSC] in the USA): 1260,1240,1220,1290,1230,1270,1265,1250,1210,1234,1280,1285,1287

Question 5

When did the transition from Federal Supply Groups (FSG) to NATO Supply Groups (NSG) occur?

Accepted Answer

The transition from Federal Supply Groups (FSG) to NATO Supply Groups (NSG) occurred on January 1, 1997. This change was implemented to align the classification and coding systems used by NATO member countries for military supplies and equipment. Federal Supply Groups (FSG) are now obsolete.

Question 6

What is an Elevation Indicator?

Accepted Answer

An Elevation Indicator (INDICATOR,ELEVATION) is a component which presents visually the angle between a fixed reference point and a target in a vertical plane. May include accessories.

Question 7

What is a Bearing Indicator?

Accepted Answer

A Bearing Indicator (INDICATOR,BEARING) is an indicator that displays data for the determination of the terrestrial bearing or measured angle, between a target and a fixed reference point.

Question 8

What is a Fire Control Instrument Cover?

Accepted Answer

A Fire Control Instrument Cover (COVER,FIRE CONTROL INSTRUMENT) is a cover designed to conform to the shape and dimensions of a specific mechanical and/or optical fire control instrument. It is used as a protective covering when the instrument is not in use. May include securing facilities, such as drawstrings, snap fasteners, and the like.

Question 9

What is a Tripod Mount Leg?

Accepted Answer

A Tripod Mount Leg (LEG,TRIPOD MOUNT) is an item which, in conjunction with two similar items, aids in the support of a machine gun, recoilless gun, rifle or the like. It is a component of a MOUNT, TRIPOD (as modified); or a TRIPOD, RIFLE MOUNT; and may be a single or sectional item with an integral or nonintegral foot. Excludes LEG, GUN MOUNT. See also LEG SECTION, TRIPOD MOUNT.

Question 10

What is a Tripod Mount Leg Section?

Accepted Answer

A Tripod Mount Leg Section (LEG SECTION,TRIPOD MOUNT) is an item which in itself is not a complete functioning item. It consists of parts which, together with other similar parts, form a LEG, TRIPOD MOUNT.

Question 11

What is an Electro-Optical Target Designator Set?

Accepted Answer

An Electro-Optical Target Designator Set (TARGET DESIGNATOR SET,ELECTRO-OPTICAL) is a complete set that utilizes electronic and optical techniques for locating a target. The set directs laser, infrared, or other electronically emitted energy on the target so that appropriate detectors can track or home on the reflected energy. See also RANGE FINDER-TARGET DESIGNATOR, LASER; and DETECTOR, LASER, ILLUMINATED TARGET.

Question 12

What is a Photo Locator System?

Accepted Answer

A Photo Locator System is a transportable collection of tactical equipment whose basic function utilizes a photographic data base for establishing coordinates of enemy target locations, friendly units, and survey control points housed (assembled) in a modified shelter. The item of supply includes an analytic photogrammetric positioning system, heaters and air conditioners for environmental control, radio communications installation, work surfaces, storage containers, and the like. Equipment necessary to provide mobility and electric power is not a component of this item of supply.

Question 13

What is a Laser Target Designator Tripod?

Accepted Answer

A Laser Target Designator Tripod (TRIPOD,TARGET DESIGNATOR,LASER) is a device with three vertically adjustable or nonadjustable legs hinged or permanently affixed to a mounting plate or head and designed to support a TARGET DESIGNATOR SET, ELECTRO-OPTICAL.

Question 14

What is a Laser Range Finder-Target Designator Case?

Accepted Answer

A Laser Range Finder-Target Designator Case (CASE,LASER RANGE FINDER-TARGET DESIGNATOR) is a case specifically designed to accommodate a RANGE FINDER-TARGET DESIGNATOR, LASER and accessories.

Question 15

What is an Analytical Photogrammetric Positioning System?

Accepted Answer

An Analytical Photogrammetric Positioning System is a system consisting of a transportable collection of tactical equipment such as a computer, optical mechanical scanner, digital controller, transillumination device, and the like, which is used to provide an electronic computation of elevation data, geographical latitude and longitude values, and coordinates for target locating and identifying offset aiming points, target acquisition devices, and artillery survey control.

Question 16

What is a Command Launch Unit?

Accepted Answer

A Command Launch Unit (LAUNCH UNIT,COMMAND) is a device used for target acquisition and fire command.  The unit has missile programming capability and may have day, night and&#47;or video capability.

Question 17

What is a Target Area Display Unit?

Accepted Answer

A Target Area Display Unit (DISPLAY UNIT,TARGET AREA) is a device having a transparent panel upon which is affixed a coordinated topographical map. The item contains electromechanical devices which receive digital data indicating latitude and longitude from a COMPUTER, GUN DIRECTION, and projects a light image in the form of a split cross through the transparent panel and the map to indicate a specific target.

Question 18

What is a Command Display Indicator?

Accepted Answer

A Command Display Indicator (INDICATOR,COMMAND DISPLAY) is an electromechanical device which has a series of small windows through which such information as fire commands, gun laying data, ammunition type, and the like are displayed. It is located at artillery emplacements, and is electrically connected to the CONSOLE, GUNNERY OFFICER'S and the COMPUTER, GUN DIRECTION.

Question 19

What is a Laser Illuminated Target Detector?

Accepted Answer

A Laser Illuminated Target Detector (DETECTOR,LASER ILLUMINATED TARGET) is an item which senses reflected laser energy. Processes data to determine the direction of incoming laser energy relative to the sensor's normal line of sight. May include interface with GPS Satellites, azimuth and vertical angle determination and may be capable of exporting target data.

Question 20

What is a Multifunction Display Unit?

Accepted Answer

A Multifunction Display Unit (DISPLAY UNIT,MULTIFUNCTION) is an indicator unit capable of receiving and displaying a multitude of information utilizing a cathode ray tube, plasma display, liquid crystal display, or the like.  The unit operates in multiple functions and displays information from several systems such as stores management systems, fire control computer, RADAR, electro-optical weapons, and infrared sensors.  The display may be color, monochrome, or black-and-white.  Excludes DISPLAY UNIT, RADAR and DISPLAY UNIT, FLIGHT INFORMATION.

Question 21

What is a Laser Designator Module?

Accepted Answer

A Laser Designator Module is a sealed unit that has miniaturized electro-optical components designed to transmit a coded pulse repetition rate of a high powered laser at a selected target.

Question 22

What is an Eyepiece Plug?

Accepted Answer

An Eyepiece Plug (PLUG,EYEPIECE) is an item designed to conform to the general shape of an eyepiece. It may or may not have a tether. Excludes CAP,LENS.

Question 23

What is a Fire Control Target Selector Group?

Accepted Answer

A Fire Control Target Selector Group (TARGET SELECTOR GROUP,FIRE CONTROL) is a collection of items, which make an auxiliary off-mount sighting unit, and are electrically connected with the on-mount fire control system. It includes a communications system.

Question 24

What is a Periscope Subassembly?

Accepted Answer

A Periscope Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of a periscope subassembly but which in itself is not a complete functioning item and cannot be assigned a more definite item name.

Question 25

What is an Optical Element Holder?

Accepted Answer

An Optical Element Holder (HOLDER,OPTICAL ELEMENT) is an item specifically designed to hold and/or position a mirror(s), prism(s), reflector(s), or the like, in an optical system. Excludes CELL, OPTICAL ELEMENT; HOLDER, MIRROR and HOLDER, REFLECTOR.

Question 26

What is an Azimuth Telescope?

Accepted Answer

An Azimuth Telescope (TELESCOPE,AZIMUTH) is a navigational telescope instrument for use with a self-synchronous alidade. It is equipped with a vertical reticle line to determine bearings.

Question 27

What is an Elbow Telescope?

Accepted Answer

An Elbow Telescope (TELESCOPE,ELBOW) is a telescope whose line of vision is bent 90 degrees.

Question 28

What is a Panoramic Telescope?

Accepted Answer

A Panoramic Telescope (TELESCOPE,PANORAMIC) is a telescope having a horizontally rotating head.

Question 29

What is a Straight Telescope?

Accepted Answer

A Straight Telescope (TELESCOPE,STRAIGHT) is a telescope whose line of vision is 180 degrees from the eye.

Question 30

What is a Binocular?

Accepted Answer

A Binocular is a hand held optical instrument consisting of two telescopes on a common mounting adapted for stereoscopic use of both eyes of the user. The item may be designed for accommodation of prismatic devices.

Question 31

What is an Optical Instrument Window?

Accepted Answer

An Optical Instrument Window (WINDOW,OPTICAL INSTRUMENT) is a color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.

Question 32

What is an Optical Instrument Light Filter?

Accepted Answer

An Optical Instrument Light Filter (FILTER,LIGHT,OPTICAL INSTRUMENT) is an item having two plane-parallel surfaces and consisting of a polarizing material bonded between glass or plastic. This item transmits light in only one plane and is usually used in pairs to vary the light transmitted into or through an optical instrument. Excludes WINDOW, OPTICAL INSTRUMENT.

Question 33

What is a Telescopic Instrument Light Filter?

Accepted Answer

A Telescopic Instrument Light Filter (FILTER,LIGHT,TELESCOPIC INSTRUMENT) is an item having two plane-parallel surfaces and used in the telescopic system of an optical instrument to modify the density or spectral intensity of light by absorption. Several filters having varied characteristics are usually mounted in such a manner that any selected filter may be moved in or out of the optical axis as light conditions warrant. Excludes WINDOW, OPTICAL INSTRUMENT.

Question 34

What is a Ball Socket Seat?

Accepted Answer

A Ball Socket Seat (SEAT,BALL SOCKET) is a rigid item, usually circular in shape, having a concave or bevel bearing surface on one end. It is designed to mate with and provide a wear surface for the ball of a ball stud, control rod, arm, or the like. The other end is usually flat, flanged, or offset and is usually designed to mate with a flat surface or spring. Includes metal items having a plastic ball socket insert. See also WASHER, CONCAVE.

Question 35

What is an Infrared Collimator?

Accepted Answer

An Infrared Collimator (COLLIMATOR,INFRARED) is an item, which includes a light or heat source and an optical system, designed to assist in the alignment of the optical system of infrared equipment.

Question 36

What is a Rate Gyroscope?

Accepted Answer

A Rate Gyroscope (GYROSCOPE,RATE) is a gyroscope which senses, measures, and transmits rate of angular displacement data. See also SENSOR,ANGULAR RATE.

Question 37

What is an Optical Element Cell?

Accepted Answer

An Optical Element Cell (CELL,OPTICAL ELEMENT) is a cylindrical item specifically designed to hold a lens, reticle, or window in an optical system. Includes eccentric cells and/or rings designed to be rotated within the instrument to shift an optical element to a prescribed position.

Question 38

What is a Diopter Scale?

Accepted Answer

A Diopter Scale (SCALE,DIOPTER) is a graduated scale, usually cylindrical in shape, attached to, or forming a part of, the focusing nut or knob of the eyepiece of an optical instrument. It is read in conjunction with a line or dart indicator to measure the change in refracting power of the eyepiece, in diopters, and introduces correction to compensate for the eyesight variation of the observer. It may have a knurled periphery and/or teeth on the inside diameter.

Question 39

What is a Fire Control Instrument Level?

Accepted Answer

A Fire Control Instrument Level (LEVEL,FIRE CONTROL INSTRUMENT) is a device which utilizes a cylindrical or circular VIAL, LEVEL. It is used for leveling, adjusting and setting angles for fire control instruments of which it is an integral part.

Question 40

What is a Telescope Mount?

Accepted Answer

A Telescope Mount (MOUNT,TELESCOPE) is a mechanical device designed to support and/or position a telescope. It may include one or more of the following; cross leveling device, means of boresighting a gun, azimuth and/or elevation, adjusting mechanism, and accommodations for attaching a LIGHT, INSTRUMENT.

Question 41

What is an Optical Instrument Headrest?

Accepted Answer

An Optical Instrument Headrest (HEADREST,OPTICAL INSTRUMENT) is an item fabricated from a cellular rubber pad, cemented to a rigid or semirigid backplate. It is usually shaped to fit the curvature of the forehead or a single brow of the observer. It is designed to be mounted on sighting devices, such as periscopes, telescope mounts, range finders, and thelike, to protect the observer from vibration and&#47;or shock while sighting.

Question 42

What is an Optical Instrument Shade?

Accepted Answer

An Optical Instrument Shade (SHADE,OPTICAL INSTRUMENT) is a tubular item fitted to the objective end of an optical instrument to protect the lens and/or window against the direct rays of the sun, and/or other obscuring elements.

Question 43

What is an Optical Instrument Eyeshield?

Accepted Answer

An Optical Instrument Eyeshield (EYESHIELD,OPTICAL INSTRUMENT) is a resilient rubber item, designed to be attached to the viewing aperture of an optical instrument, to maintain proper eye distance and to protect the eye(s) of the observer from stray light, wind, and/or injury due to shock of gun fire or similar disturbances. Excludes VISOR, PERISCOPE.

Question 44

What is an Optical Instrument Eyepiece Assembly?

Accepted Answer

An Optical Instrument Eyepiece Assembly (EYEPIECE ASSEMBLY,OPTICAL INSTRUMENT) is an optical system consisting of two or more lenses secured within a cylindrical sleeve. It is the component of an optical instrument nearest the eye of the observer when sighting. The distance between lenses is maintained by an optical element spacer. It usually has focusing facilities and may include a reticle, filter, and/or diopter scale.

Question 45

What is an Optical Instrument Cell Assembly?

Accepted Answer

An Optical Instrument Cell Assembly (CELL ASSEMBLY,OPTICAL INSTRUMENT) is an item consisting of a CELL, OPTICAL ELEMENT in which is secured one or more optical elements, such as lenses, reticles, filters, windows, and the like. May include retaining rings, spacers, and/or separators. For items with focusing facilities and/or a diopter scale, see EYEPIECE ASSEMBLY, OPTICAL INSTRUMENT.

Question 46

What is a Fire Control Instrument Cover?

Accepted Answer

A Fire Control Instrument Cover (COVER,FIRE CONTROL INSTRUMENT) is a cover designed to conform to the shape and dimensions of a specific mechanical and/or optical fire control instrument. It is used as a protective covering when the instrument is not in use. May include securing facilities, such as drawstrings, snap fasteners, and the like.

Question 47

What is a Tank Periscope Mount?

Accepted Answer

A Tank Periscope Mount (MOUNT,TANK PERISCOPE) is a device which is usually attached to a gun trunnion or tank turret. It is used to link the PERISCOPE, TANK with the gun bore at all angles of gun elevation and it provides an operating and/or retracting position for the periscope. A HEADREST, OPTICAL INSTRUMENT is furnished with the item.

Question 48

What is a Tank Periscope Head Assembly?

Accepted Answer

A Tank Periscope Head Assembly (HEAD ASSEMBLY,TANK PERISCOPE) is the top section of a PERISCOPE, TANK, consisting of an inclosure which contains one or more mirror(s), and/or prism(s), and a window. It is readily removable to facilitate replacement.

Question 49

What is an Optical Element Retainer?

Accepted Answer

An Optical Element Retainer (RETAINER,OPTICAL ELEMENT) is a cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see CELL, OPTICAL ELEMENT. Excludes RING, EXTERNALLY THREADED.

Question 50

What is an Articulated Telescope?

Accepted Answer

An Articulated Telescope (TELESCOPE,ARTICULATED) is a telescope which is affixed to a weapon to provide viewing parallel to the direction of the gun bore line. It is designed with a rigidly held eyepiece and with movable sectional tubes connected by geared joints. The angles of reflective optical elements adjust automatically to provide a line of sight through the telescope as the gun tube is elevated or depressed.

Question 51

What is an Optical Element Retaining Ring?

Accepted Answer

An Optical Element Retaining Ring (RING,RETAINING,OPTICAL ELEMENT) is a cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see RETAINER, OPTICAL ELEMENT. Excludes CELL, OPTICAL ELEMENT; NUT, PLAIN KNURLED; NUT, PLAIN ROUND; and RING, RETAINING.

Question 52

What is an Optical Bore Sight?

Accepted Answer

An Optical Bore Sight (SIGHT,BORE,OPTICAL) is a telescopic device which utilizes a boresighting reticle, used to align the axis of a weapon bore with a target. It is secured to the exterior or interior of a weapon barrel or tube. It includes a MOUNT, TELESCOPE with a strap and clamp assembly for exterior mounting, or an expansion sleeve adapter for internal mounting. Excludes SIGHT, BORE, BREECH; SIGHT, BORE, MUZZLE and SIGHT, BORE, OPEN.

Question 53

What is an Infinity Sight?

Accepted Answer

An Infinity Sight (SIGHT,INFINITY) is an optical instrument capable of superimposing a reticle pattern upon a target as seen through a unity-power optical system.

Question 54

What is a Sight Unit?

Accepted Answer

A Sight Unit is a compact sighting device composed of an elbow or panoramic telescope, mount, and/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. Excludes SIGHT, INFINITY and SPOTTING INSTRUMENT, OPTICAL.

Question 55

What is an Optical Spotting Instrument?

Accepted Answer

An Optical Spotting Instrument (SPOTTING INSTRUMENT,OPTICAL) is an item used for spotting enemy fire, detecting azimuth and deflection errors in bursts of fire for flash ranging, terrestrial and celestial observation, and for accurate measurement of horizontal and vertical angles by the use of reticles. It may have a single or dual optical system(s), utilizing a straight or offset (raised) line of sight. It is supported by a tribrach having a leveling plate with adjusting screws, circular and/or tubular level vials, azimuth and elevation controls, and the like. It may be mounted in a tripod or groundshelf mount, and usually includes accommodations for a LIGHT, INSTRUMENT.

Question 56

What is an Optical Instrument Eyeguard?

Accepted Answer

An Optical Instrument Eyeguard (EYEGUARD,OPTICAL INSTRUMENT) is an item externally or internally threaded on one end, designed to be attached to the viewing end of an eyepiece. It is used to prevent physical contact of the observers' eye(s) with the eye lens(es) and protect the lens(es) from damage. Excludes EYESHIELD, OPTICAL INSTRUMENT; and VISOR (as modified).

Question 57

What is an Optical Check Sight?

Accepted Answer

An Optical Check Sight (SIGHT,CHECK,OPTICAL) is a metallic device which protrudes horizontally from a gun barrel, and is used by a gun commander to select and/or designate a target to, or check the "on target" sight of, the gunner. It consists of a split collar which clamps on the gun barrel, a projecting arm(s) which supports a lens holder, and a reticle or polarized lens. It includes azimuth and elevation boresighting adjustments. Excludes SIGHT, FRONT; SIGHT, REAR and SIGHT, BORE, OPTICAL.

Question 58

What is an Infinity Aiming Reference Collimator?

Accepted Answer

An Infinity Aiming Reference Collimator (COLLIMATOR,INFINITY AIMING REFERENCE) is an item which utilizes an optical collimator with a special reticle to simulate an azimuth reference target at infinity. It includes accommodations for reticle illumination, and has an integral, specially designed tripod with a level vial and adjusting knobs of elevation and azimuth.

Question 59

What is a Mounted Optical Instrument Prism?

Accepted Answer

A Mounted Optical Instrument Prism (PRISM,OPTICAL INSTRUMENT,MOUNTED) is a PRISM, OPTICAL INSTRUMENT, retained in a HOLDER (1), OPTICAL ELEMENT. See also BEAM SPLITTER, OPTICAL INSTRUMENT, MOUNTED.

Question 60

What is an Optical Instrument Reflector Assembly?

Accepted Answer

An Optical Instrument Reflector Assembly (REFLECTOR ASSEMBLY,OPTICAL INSTRUMENT) is a device consisting of two optical instrument mirrors and/or optical instrument prisms mounted on a common mounting at a specific angle. It is used to transmit an image through an optical system to the reviewer.

Question 61

What is an Optical Instrument Reticle Assembly?

Accepted Answer

An Optical Instrument Reticle Assembly (RETICLE ASSEMBLY,OPTICAL INSTRUMENT) is an optical element consisting of a polished optical glass disk to which is bonded a RETICLE, OPTICAL INSTRUMENT and a PRISM, OPTICAL INSTRUMENT. A right-hand and a left-hand assembly are used in an optical system to provide three dimensional vision of an object or target.

Question 62

What is a Fire Control Computer?

Accepted Answer

A Fire Control Computer (COMPUTER,FIRE CONTROL) is a computer which provides calculations for the delivery of fire-power to a predetermined target. Do not use if a more specific name can be found in this index. See also COMPUTER, DEPTH CHARGE RELEASE TIME; COMPUTER, POSITION BOMBING; and COMPUTER, TERRAIN CLEARANCE.

Question 63

What is a Telescope And Quadrant Mount?

Accepted Answer

A Telescope And Quadrant Mount (MOUNT,TELESCOPE AND QUADRANT) is a mechanical device designed to support and/or position a telescope and a quadrant to a weapon. It may include one or more of the following: cross leveling device, means of boresighting a gun, azimuth and/or elevation and adjusting mechanism. Excludes MOUNT, TELESCOPE.

Question 64

What is a Reaction Cylinder Assembly?

Accepted Answer

A Reaction Cylinder Assembly (CYLINDER ASSEMBLY,REACTION) is a spring loaded and/or gas filled mechanism designed to exert an opposite force which will be used to absorb, dampen, and/or neutralize applied force. Excludes SHOCK ABSORBER, DIRECT ACTION; and SHOCK ABSORBER, LEVER ACTION.

Fire Control Equipment

Federal Supply Group (FSG): 12

NATO Supply Classification Group (NSG): 12

NSN Format for Fire Control Equipment

Fire Control Designating and Indicating Equipment

Optical Sighting and Ranging Equipment

Fire Control Computing Sights and Devices

Miscellaneous Fire Control Equipment

Fire Control Systems, Complete

Aircraft Gunnery Fire Control Components

Fire Control Transmitting and Receiving Equipment, except Airborne

Fire Control Stabilizing Mechanisms

Fire Control Directors

Fire Control Components

Aircraft Bombing Fire Control Components

Fire Control Radar Equipment, except Airborne

Fire Control Sonar Equipment

Frequently Asked Questions (FAQ) for Federal Supply Group 12

Top 20 Supply Items Included in Federal Supply Group 12

Stock Items for FSG 12 Page 1 of 579