Diameter 51mm Refractive Green Film Telescope Achromatic Objective Doublet Lens Parallel Light Tube DIY Focal Length 219mm

Diameter 51mm Refractive Green Film Telescope Achromatic Objective Doublet Lens Parallel Light Tube DIY Focal Length 219mm
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sku: 1005007217527385
$24.99
Shipping from: China
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