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Alternative links
This is an adapter and arm package to attach the "MV265" thermal/IR monocular (found below) to a helmet using a cheap surplus helmet rhino. See the readme for details.
https://www.alibaba.com/product-detail/Hot-Sellers-MV265-7X-Lens-9mm_1601288508520.html?spm=a2747.product_manager.0.0.4e5471d2I1xyNH
https://www.alibaba.com/product-detail/Hot-Sellers-MV265-7X-Lens-9mm_1601288508520.html?spm=a2747.product_manager.0.0.4e5471d2I1xyNH