3' diameter kettle!

From 1929
"There is an old saying that an Englishman can’t do without his tea. The manufacture of this huge kettle shown at left seems to bear this out, for it was made for the purpose of being able to brew large quantities of tea to accommodate the hundreds of persons who drop into a prominent tea room in London at any time of the day or night and demand a stimulant. A study in contrast is afforded in the photo in which a young woman is pouring tea from the immense kettle into an average sized tea pot. Ordinarily she would not be able to lift it so easily, but the kettle is nearly empty. It has a capacity of approximately 20 gallons and weighs 15 pounds."