A loupe is a small magnifying glass used to see fine details in objects. It is commonly used by professionals like jewelers, watchmakers, and photographers to inspect items closely. Loupes come in various magnification levels, typically ranging from 2x to 10x, and are often handheld or mounted on a stand for stability. Loupes can be made from different materials, including glass and plastic, and may have built-in lighting for better visibility. They are essential tools in fields such as gemology, electronics, and art restoration, helping experts analyze and evaluate the quality of their work or materials.