Vintage Industrial Movie Theater Photography Spot Light - iron floor lamp on wheels

This is a heavy iron light we bought at the antique store years ago and used at our home. Do not know much about it except that it is very cool and it is fully functional of course. 
Very sturdy and strong, not like cheap flimsy copies. Vintage and modern at the same time, it would be a great addition to lofts and modern houses to add an industrial touch.
It is not the smallest lamp and it takes some floor space.