This beautiful optical-grade crystal glass magnifier features a 4X magnification and an inscribed compass rose on the bottom, making it perfect for use with nautical charts. With crystal clarity, this magnifier enlarges small print on any task and is a welcome addition to desks or chart tables. Use for jigsaw puzzles, reading the fine print on documents, looking at small details in artwork or photos, and more! The scratch resistant Crystal Magnifier is more durable than acrylic models and comes in an attractive, felt-lined gift box.