If you just want to weight your truck, drive up onto the scales. There are three sections. Get your front axle on the first scale and back on the second. There is usually a button; it's high in the air for big rigs, so I usually have wife stay in the truck, Stand on my tire and press button.
Then they ask, first weighing or re-weight and for a truck number. I just make up a number every time, doesn't matter, it's for commercial trucks. They weight, you go inside and pay and get your ticket. Super easy.
Depending on the station, it's $3-5 for the first weighing and $1 after. I have been to one place that charged $7 in CA for first weighing.
When I do the truck and Airstream, it's usually to figure out tongue weight, and if my WD is setup correctly. First pass naturally tells me the trucks axle weights.
The second pass is done with the truck between first two sections of the scale, and trailer on the back section, with NO weight distribution, applied. This shows me my tongue weight. (1st pass axles - 2nd pass axles)
The third pass is with WD applied. And should show that I am distributing the weight evenly. I want the front axle weight to be close to what it was when first weighted just the truck. You can see here how the weights shift. And then you can adjust your WD from there.
