at my yard, you can only see the big scale if you go into the office, but that for the whole truck load (usually steel). When i do small loads of copper, aluminum, etc., they have a small scale near the entrance with a guy there and i can watch as i load it. Thats the one i'll keep an eye on. Chances are if that one is out of whack, so is the large scale. I suppose you can call Weights and Measures and make an anonymous tip, then be assured that once they check it out the yard will comply (for awhile anyway). Sort of like when an airline has a crash somewhere...it usually becomes the safest airline to fly really quick because all the planes get checked out! good luck all