"Be precise. A lack of precision is dangerous when the margin of error is small". Donald Rumsfeld.
You are pumping fuel at 1300LPM (perhaps in a war-zone or at a service station). You can't afford anything less than precision in your equipment. You know its been engineered well and built with precision. Precision is what stops your equipment wearing out seals. Its what allows our pumps to spin faster, our compressors to blow better, our overfill sensors to stop loading at the right level and our meters to accurately measure your liquids.
The best of German engineering discipline ensures Haar equipment is engineered and built precisely so you can use it with confidence.