Optical Glass Focal Length 139mm Doublet Optics Glass Double Convex Achromatic Lens DIY Astronomic Telescope Objective 36mm

Optical Glass Focal Length 139mm Doublet Optics Glass Double Convex Achromatic Lens DIY Astronomic Telescope Objective 36mm
sku: 1005001793950075
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$21.08
Shipping from: China
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