Gb-Gas heat input Calculator

SMART PHONE HEAT INPUT AND GAS RATE APP that can be use to time the gas meter for heat input or gas rate calculations. Inut the information into the box and press calculate and out comes: GAS RATE.................... in M3/HR HEAT INPUT (gross)..... in kW for older appliances HEAT INPUT (net)........ in kW for newer appliances it doesnt get much simpler no longwinded calculations to remember Instruction for use are here.. http://www.gb-gas.co.uk/CCount/click.php?id=7