LONGWIN Crystal Dome Magnifier/Paperweight Reading Magnifying Glass-3.9 Inch

• 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.

Material:K9 Crystal, which is one of the highest quality and most durable Optical Glass - Crystals on the market and is prized for not only its clarity but its durability in addition to being affordable. K9 Crystal is the choice of crystal used to make prisms for lasers! K9 has the same physical properties as 24% leaded crystal as it polishes, shines as well as sparkles the same as 24% leaded glass (crystal), but doesn't have the lead, it is lighter than leaded glass and more durable. The crystal dome paperweight magnifying glass make reading easy!