Inventing and making specialty firefighting vehicles is what Innovative Fire Fighting Solutions (IFFS) is strong in. They focus mainly on systems for extinguishing water and hose systems. Fire trucks all have their own requirements regarding the amount of water on board, the flow and the distance over which water must be transported. For measuring the water flow, IFFS uses magnetic flow meters from Mecon. These are known for their accuracy. So why did they have a 30% deviation?