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

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  1. WJC

    So....I've been trying to contact Zen-Ray...

    Although it goes against the popular wisdom, noble or inert gasses such as nitrogen are not used to “pressurize” binoculars. There is indeed a light pressure. But, the gas is there to provide a negative growth environment for fungus and what Aristotle called “Bad juju cooties.” :cat:
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