Required accuracy / resolution of truck scales?
There is no way that a scale that can weigh a truck will be able to sense 1 lb difference, it's not "sensitive" enough.
I fully understand that, and did not expect it to be. But let's think in the context of "what" and "where" these particular scales are...........
These are in the county waste transfer station, where you are liable to get some old guy in a mini-pickup with one or two garbage cans. Hell I can visualize an entire load of not much more than the two of these scales generate for error.
The "other" thing that comes to mind is "when it matters." That is, when you are either selling or buying something by weight, or just as bad / worse, might have been stopped by a cop or forced into a scale and the ticket "you are about to get" depends on what you weigh.
I would think these accuracies would be "easy" to find out, published, perhaps even posted prominently.
As I eluded to earlier, the plan for now is to weigh the truck empty -- on both scales-- and weigh it loaded -- on both scales. The way it was explained to me, there should be a difference between the two of less than 40 lbs error. That is,
(Scale A loaded - unloaded) ---difference-- (Scale B loaded - unloaded) = less than 40 lbs