Hi, I was wondering if anyone knows where I can get a table with information on different gas meters and their capacity (in cubic meters)? I have an existing R5 meter (which as far as I understand is imperial and rated in cubic feet) but am not sure what the actual capacity of this meter is? I am looking to install some new plant (boilers, CHP, direct fired DHW heater) and am sure that the meter will need to be upgraded. One other point is that the existing supply seems to be around two inches. Thanks!