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optical:instrument,
-
sensitive:detector,
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simple:equipment,
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simple:instrument,
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optical:equipment,
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scientific:instrument,
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electronic:detector,
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simple:system,
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optical:device,
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passive:instrument,
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electronic:equipment,
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external:system,
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light:sensor,
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astronomical:instrument,
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mechanical:detector,
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auxiliary:apparatus,
Category Nuances for photometer:
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auxiliary,
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light,
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optical,
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simple,
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scientific,
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passive,
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astronomical,
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external,
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electronic,
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mechanical,
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sensitive,
Simple Categories for photometer: