Also consider an Auto Wrecker/ junkyard that cars get towed into for scrap. Most pay by the pound, and weigh the tow trucks on the way in and again on the way out, to calculate the scrap weight. I use the one by me about once a year. They stamp the front axle weight, then I pull forward til the tears of my truck are also on, stamp again, then pull up so trailer is also on scale. Then I walk inside and the scale man hands me a piece of scrap paper with the three separate weights on it. They have never asked for any money but I always offer