A magnifying glass (called a hand lens in laboratory contexts) 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.
Magnifying glasses have a handle. 
( z1 have :ARG0 ( z2 glasses :ARG0-of ( z3 magnify ) ) :ARG1 ( z4 handle ) )