This Metal Linen Test Glass Loupe Magnifier is a compact, fold-out linen test magnifier featuring a 6.5 power 20mm glass lens. The magnifier's frame design is sturdy and very durable. Includes markings in both inches and centimeters for easy measuring of small parts and is perfect for stitch counting, as well as other fine-detail-viewing! Super portable, and folds flat for storage. The magnifier comes with a soft pouch to protect from damage when not in use or when taking the magnifier on the go.