Double Convex Lens, Highly polished, optically true lens is excellent for physics classroom demonstrations in optics and light refraction, with ground edges, great for physics classrooms, with highest grade, Size: 500mm focal length, Lens measures 3in diameter, 0.1 weight
Crystallizing Dish, made of high quality, heavy duty, borosilicate glass, Flat bottom, no spout, Dish measures 1in tall, 1.6in diameter, Perfect for any science or home laboratory, Strain Point -515 deg C, Annealing Point 565 deg C, Softening Point 820 deg C, 20ml capacity
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