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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. dries1

    Swift Audubon 8.5x44 Model 804

    Do they fog up, the eye relief ahmmm......., looks tight.
  2. dries1

    Swift Audubon 8.5x44 Model 804

    Ed you are no doubt correct, the later 820 is not as good as the older models from an optical perspective.
  3. dries1

    Swift Audubon 8.5x44 Model 804

    I just asked about a serial # on an 820 Swift that is all.
  4. dries1

    Swift Audubon 8.5x44 Model 804

    At least they are more weatherproof.
  5. dries1

    Swift Audubon 8.5x44 Model 804

    Thanks Dennis.
  6. dries1

    Swift Audubon 8.5x44 Model 804

    So a Swift 8.5X44 820 non ED with serial # 0000763 would be made in what year?
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