Alvin Magnifiers are perfect for all drawing and drafting needs. A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle (see image). A magnifying glass can be used to focus light, such as to concentrate the sun's radiation to create a hot spot at the focus for fire starting.
Alvin offers a wide range of magnifiers from handheld to magnifier lamps. This is to suit different needs and preferences.