An enclosure that totally or partially surrounds an item in order to reduce its emitted noise.
A system or device mounted on radio masts, towers and other tall structures intended to assist navigators in determining their position or safe course, or to warn them of dangers or obstructions to navigation.
An attenuator is a telecommunication device that reduces the amplitude of a signal without appreciably distorting its waveform. Attenuators are usually passive devices. The degree of attenuation may be fixed, continuously adjustable, or incrementally adjustable.
An automatic tracking system used on ships and by vessel traffic services (VTS) for identifying and locating vessels.
An artefact which is a stack or an assembly of heavy-duty valves intended to be attached to the top of the casing to control the well pressure.
A unit or assembly of units or sections and associated fittings forming a rigid structural system used to securely fasten or support cables and raceways.
A timepiece for the measurement of time.
An instrument that indicates either a) magnetic bearings by alignment of its needle on the magnetic poles, or b) reference bearing by radio signal, or c) change of orientation in relation to a gyromaintained line.
An electric generator for the production of direct current and voltage.
A device used to translate print media into computer language so that a document can be viewed and read later on.
A power transformer of which the magnetic circuit and windings are not immersed in an insulating liquid.
A 'control panel' intended for electrical apparatus.
An electrical conductor that has several power distribution points.
A radio beacon in the mobile service the emissions of which are intended to facilitate search and rescue operations (EPIRB).
Machine capable of transmitting written input via telephone lines.
A projector providing a beam of intense illumination.
An electromagnetic storage device, continuously available within a computer system.
Is a communication system.
A current limiter that limits the power (energy) which can be delivered from a safe area into a hazardous area.
A control panel with an array of systematically arranged (piano like) keys by which a machine is operated or by which an instrument can be played on.
A lightning arrestor is a device used on electric power systems and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning.
Short for modulator/demodulator. A communications device that converts one form of a signal to another that is suitable for transmission over communication circuits, typically from digital to analogue and then from analogue to digital.
A switchgear and controlgear that houses motor starters to control electric motors.
A very accurate flow meter used to record oil exports.
A post or buoy placed over a shoal or bank to warn vessels, also a signal mark on land.