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simple:sensor,
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basic:unit,
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electronic:unit,
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marine:unit,
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electronic:instrumentation,
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magnetic:sensor,
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flying:instrument,
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inertial:sensor,
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environmental:sensor,
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extra:hardware,
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external:power,
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additional:sensor,
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new:sensor,
Category Nuances for electronic_compass:
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external,
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marine,
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simple,
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electronic,
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flying,
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magnetic,
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extra,
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additional,
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environmental,
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new,
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basic,
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inertial,
Simple Categories for electronic_compass: