My local weighbridge has a ramp on each side. I'd read that for accurate readings the weighbridge should have level approaches. I've been doing some experiments with a wooden box (actually one of my bookshelf speakers!) and some kitchen scales. I'm finding the differences between level and angled readings (eight degrees) to be less than 2 percent. This was over several readings averaged. I'm sure that with the rear wheels at the end of the ramp (just before the weigh plate) the MH would be at less than eight degrees. Can someone offer any mathematical explanation of why it is so bad to use a weighbridge with an angled approach. I can appreciate it depends on the angle. Maybe I'll check the inclination next time I use that particular weighbridge.