NAVIGATION INSTRUMENTS
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BTNAVIGATION + NAUTICAL ASTRONOMY + AERONAUTICAL ASTRONOMY
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UDC527*1
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Descriptor GERNAVIGATIONSINSTRUMENTE
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Descriptor ENGNAVIGATION INSTRUMENTS
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Descriptor FREINSTRUMENTS DE NAVIGATION
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Variant GERINSTRUMENTE/NAVIGATIONSINSTRUMENTE
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Variant ENGINSTRUMENTS/NAVIGATION INSTRUMENTS
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Variant FRENAVIGATION/INSTRUMENTS
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NTRADIO LOCATORS + RADIOGONIOMETERS + RADIO COMPASSES (RADIO ENGINEERING)
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NTCOMPASS (GEOPHYSICS)
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RTASTROLABES (ASTRONOMY)
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RTRADAR, RADIO DETECTION AND RANGING (RADAR ENGINEERING)
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RTACOUSTIC DETECTION + SONAR (NAVIGATION OF SHIPS)