83mm Telescope Cemented Doublet Objective Lens Achromatic DIY Optical Lenses Focal Length 400mm-900mm

83mm Telescope Cemented Doublet Objective Lens Achromatic DIY Optical Lenses Focal Length 400mm-900mm
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sku: 1005006075898942
$36.80-2%
$36.08
Shipping from: China
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