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Lenses Spherical, Bi-Convex, 75 Mm Diameter 175Mm
Optical magnifying lenses for clear and accurate vision.
Lenses Spherical, Bi-Convex, 75 Mm Diameter 100Mm
High-quality optical lenses for clear and precise imaging.
Lenses Spherical, Bi-Convex, 50 Mm Diameter 100Mm
Clear vision with 50mm bi-convex spherical lenses.
Electric Generator, Hand Cranked With Clear Shell, Educational
Clear shell generator for educational demonstrations, hand-cranked.
Uv Sensitive Beads (Assorted Colors, 150 Beads)
Color-changing beads detect UV light and test UV products.
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