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Fine Iron Filings, 8 Oz, 1/2 Pound, 227 grams
3D magnetic field experimentation with safe-keeping screw cap.
Glass Cylindrical Lens, Bi-Concave 50X45Mm Fl 72Mm
50x45mm lens with concave curvature and 72mm focal length.
Mirrors, Spherical, Convex Diameter 75 Mm; Focal Length 15 Cm
Small convex mirrors for magnification, 15cm focal length.
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