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.
The convex lens of a hand lens is used to create a magnified image of something. 
( z1 use :ARG1 ( z2 lens :mod ( z3 convex ) :part-of ( z4 lens :mod ( z5 hand ) ) ) :ARG2 ( z6 create :ARG0 z2 :ARG1 ( z7 image :topic ( z8 something ) :ARG1-of ( z9 magnify ) ) ) )