Carson LED Lighted LinenTest™ 11.5x15mm Focusing Loupe Magnifier (LT-10) is a fold out, portable loupe magnifier featuring a 11.5x power 15mm lens. The dual lens design provides, clear, distortion-free viewing, while a super bright LED light illuminates the object. The LT-10 is marked in both inches and centimeters for measuring small objects and ease of conversion for domestic and international use. This portable loupe magnifier is perfect for stitch counting but can also be used for color processing. The LT-10 is portable, lightweight, and folds flat for storing when not in use. Includes durable plastic case for protection between uses. Requires three button cell batteries which are included for use right out of the box.