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Double convex lenses magnifier Physical optics lens eyepiece telescope DIY projector Optical experiment D20mm F40mm
Double convex lenses magnifier Physical optics lens eyepiece telescope DIY projector Optical experiment D20mm F40mm
Double convex lenses magnifier Physical optics lens eyepiece telescope DIY projector Optical experiment D20mm F40mm

Double convex lenses magnifier Physical optics lens eyepiece telescope DIY projector Optical experiment D20mm F40mm

(5.0)
US $ 9.98    50% off
US $ 4.99
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