Good example of an antique American oil lamp to be used alongside microscopes to produce the light source. It dates from the mid to late 1800s and is made of brass with a heavy circular base. It has a glass oil reservoir with a single burner on the top and a glass chimney. The height of the burner is adjustable by a small brass tightening knob. There is also a large convex lens on an adjustable arm to further direct the light source towards the microscope.