Souvenir lamp with meter, 1985Item 74856 info
Maine Historical Society
With the light bulb switched on, the meter on this lamp turns and illustrates the reality of the electric grid: light bulbs (and other electrical appliances) use electric power.
These lamps are a common gift item from and for electrical engineers.
The internal mechanism of the Sangamo watt-hour meter has been partially de-magnetized, so the dial turns faster than it would if the meter were mounted on the side of a house.