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Dew Zapper Options
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04-07-2016, 07:19 PM
glend
(Glen)
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Join Date: Jun 2013
Location: Lake Macquarie
Posts: 7,048
You can get chemical handwarmer packs, just break the seal and shake it and it will generate heat for a couple of hours. You could strap that to a lense easily. I used them skiing in Canada, and you can usually find them in ski gear stores here.
glend
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