The savings in the use of gas meters have been proven repeatedly. It is with such fixing devices that savings begin, because you are controlled only by you and do not overpay for unused volumes. If you have already decided to finally take up the future of saving money, it is worthwhile to know in advance which side to approach to this issue. When ordering a counter on the Internet or buying it in a store, you need to know what gas meter is best to deliver. The main types of gas meters: rotary, electronic, volumetric and membrane. A few moments, for each type, from which the gas meter is selected. And in general, what are gas meters.