Material: K9 crystal, Which offers a high refractive index and high clarity.
Specification: Diameter: 100mm(3.9"), height: 50mm(2"), net weight: 586g(20.7 oz).
Easy to use: This dome magnifier has smooth surface,make it glides effortlessly across any surface.
Various useage: Perfect for reading newspapers, maps, contracts, architecture plans, negatives, documents, and other reading material!
Dome magnifier: also known as a hemispherical magnifier or bright field magnifier, is a light gathering magnifier that is uniquely shaped in a half circle.