Sometimes, you need to see things that your eyes were simply not designed to see unaided. Magnifiers have a thousand uses around the home and office. Smaller units are easy to carry around and can give you a close up view of details in a picture or on a map. Jewelers use magnifiers to determine the quality and value of precious gems. Students find them useful when doing science projects. Hand held magnifiers make a great gift for elderly people who suffer from weak vision. By using one, they will be able to enjoy reading their favorite books again.