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A cooler that is intended to use air as the cooling medium.
An artefact intended for central conditioning and pressure increase of ventilation air.
An artefact intended for central conditioning and pressure increase of ventilation air.
A trap which, by a water seal, prevents foul air from rising from sinks, wash basins, drains, sewers etc.
A trap which, by a water seal, prevents foul air from rising from sinks, wash basins, drains, sewers etc.
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.
A physical object that is intended to process and annunciate alarms.
A physical object that is intended to process and annunciate alarms.
An electric generator for the production of alternating current and voltage.
An electric generator for the production of alternating current and voltage.
An electric motor driven by alternating electric current.
An electric motor driven by alternating electric current.
A physical object for increasing the power of a signal.
A physical object for increasing the power of a signal.
Is an artefact intended to retrieve a material at a particular location and inserted into something so as to test its conditions.
Is an artefact intended to retrieve a material at a particular location and inserted into something so as to test its conditions.
A detecting instrument that is intended to analyse a substance for its composition and/or properties.
A detecting instrument that is intended to analyse a substance for its composition and/or properties.
A physical object intended to hold an object firmly.
A physical object intended to hold an object firmly.
A detecting instrument for recording wind speed, and possibly wind direction.
A detecting instrument for recording wind speed, and possibly wind direction.
A physical object that is capable of emitting positive charge carriers to and/or receiving negative charge carriers from the medium of lower conductivity.
A physical object that is capable of emitting positive charge carriers to and/or receiving negative charge carriers from the medium of lower conductivity.
An electromagnetic transducer that is a physical object made of conducting material which is capable of radiating or receiving electromagnetic waves.