There is a bakelite push button switch situated on its base which operates the lamp. The shade is a typical art deco wave form.It has a wonderful glow when switched on. It measure17.5 inches tall and is 5 inches square at the base, the shade is 6.5 inches wide. Idea for a table or side table / a variety of other uses. The chrome sections do have some signs of minor wear consistent with the age of the lamp please see photos. The shade is perfect in that it has no chips cracks or damage.