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
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
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 60 mm, height 24 mm, Capacity: 35 ml, Product Dimensions: 6 x 6 x 2.5 cms, 31 g