Gasometer n. : An apparatus for holding and measuring of gas; in gas works, a huge iron cylinder closed at one end and having the other end immersed in water, in which it is made to rise or fall, according to the volume of gas it contains, or the pressure required.

Example:
Where can I find out about the history of the Gasometer in Southall?

Taxonomy
piston, gas, shell, Gas holder, plates, nozzle, fender, membrane, piston moves, Gasometers, gasometer, Piston seal, pressure, holder, relief valves, deck, gas holders, gas space.

Defination from the web:
gasometer, sometimes also gas bell) is a large container where natural gas or town gas is stored near atmospheric ... The term gasometer was originally coined by William Murdoch, the inventor of gas lighting, in the early 1800s. ...