The Carson LT-20 6.5x 20mm LinenTest Magnifier is a compact, fold out loupe magnifier featuring 6.5x power. Dual lens design ensures a clear, distortion-free view. The included LEDs illuminate the fine detail you are trying to examine. Subtle changes in focus can be obtained by using the focus wheel. The reticle is marked in both inches and centimeters. Folds flat when not being used.