Convex Mirror, Material: Glass, round, designed for physics and educational use, Because of their educational use design, there may be minor imperfections that do not affect physical function, thickness varies as they are not designed, Size: 2in Diameter, 300mm Focal Length, 2mm Thick
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: 250 mm focal length, Lens measures 1.5in diameter, 0.2 weight
Marina Standing Thermometer - Celsius and Fahrenheit, designed to sink to the bottom of the aquarium and remain in a vertical position, Centigrade, Has a safety zone temperature range indicator for most tropical fi
Evaporating Basin, made from high quality Porcelain, round form with spout, For use with high purity samples, Fully Glazed except outside base, strong, durable, Superior quality, outer dia 75 mm, height 30 mm, Capacity: 70 ml, Product Dimensions: 7.5 x 7.5 x 3.5 cms, 44 g
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