It doesn't do any good. One of the smaller companies that sell a sender, I called them to ask who makes it. The guy said they were made in house. When I asked if they were the correct non-linear, he said he's never heard of that, it's not a thing, and that I have no clue what I'm talking about. Even after explaining, he refused to believe it, and just kept saying I was wrong. I refused to buy it from them because I didn't feel like he would let me return it when it turned out to still be like all of the other ones. The Australian unit is the only one I've found that works almost perfectly. I'm sure my gauge isn't exactly calibrated correctly, but when it gets close to empty, it takes what you would expect to fill it back up.
