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Bi-Concave Glass Lens, 50 mm Diameter, 300 mm Focal Length
Diverges incident light for optical experiments and beam control.
Bi-Concave Glass Lens, 75 mm Diameter, 200 mm Focal Length
Polished glass diverging optic with ground edges.
Electric Generator, Hand Cranked With Clear Shell, Educational
Clear shell generator for educational demonstrations, hand-cranked.
Mirror, Flat Strips, Silvered Glass, Unmounted 75 Mm X 100 Mm
Compact, clear, versatile for optical uses.
Petri Dishes With Lid, Clear Polystyrene (100X15 Mm)
Clear dishes for growing mold and bacteria with lids.
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