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3309_50-150M
Unmounted bi-concave lens, 50 mm diameter, 150 mm focal length
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From $2.20 /unit
Optics Experiment Set With Laser Ray Box
Introductory ray optics set with laser and optical elements.
Lenses Spherical, Unmounted, Bi-Concave 50 mm Diameter Fl 150 mm
Unmounted bi-concave lens, 50 mm diameter, 150 mm focal length
Fine Iron Filings, 8 Oz, 1/2 Pound, 227 grams
3D magnetic field experimentation with safe-keeping screw cap.
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