The LT-30 from Carson is a foldable thread counter with 5x magnification and a 30mm lens. A thread counter, also known as a stand magnifier, is a useful tool for studying small details. After use, you can completely fold the magnifier. The thread counter is engraved with a measuring scale that can be read in both millimeters and inches. The scale ranges from 0 to 25 mm in millimeters and from 0 to 1 inch. This allows you to determine the size of an object. This thread counter is suitable for evaluating fabrics, examining stamps, or checking colors. You can also place small insects under the magnifying glass and see how large they are.