23mm Optical Glass Objective Lens Doublet Double Convex Achromatic Lenses DIY Astronomic Telescope Lentes Focal Length 102 104mm

23mm Optical Glass Objective Lens Doublet Double Convex Achromatic Lenses DIY Astronomic Telescope Lentes Focal Length 102 104mm
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sku: 4001289998569
$13.76
Shipping from: China
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