At any truck stop scale just telling them you are doing a military move. I have weighed my truck several times for a military move since they reimburse by weight of goods moved. As a side note I hauled a trailer with cargo weighing in at 9K loaded. Truck did great, just was a bit underpowered going through Wyoming elevation, nothing like moving corner to corner of the country.
Most truck stops charge for their scales. Are you saying you got them to comp it by telling them it was a military move?
I would just say that you don't know what your load weighs, and you wanted to find out your loaded weight to compare it to your factory recommended ratings for safety. If you try this, I would bet you would have a better chance of getting it comped if you fill up your tank there.
Yea, you can look up on
https://catscale.com/ and see where they are, I have used them all over.
$11.50 a weigh, with $2.00 reweighs, that's not unreasonable. There are three near me (within a mile of each other) off I-10. I'm sure most are right off the major highways. This seems like something someone who was really motivated could use to find out how their vehicle does towing different weights. Start with a trailer and something like a golf cart. Test your hills, your brakes, to check your weight compared to ratings. Then do it again with a car, then a heavier pickup or more. The base level with gradual increase would better identify where your problems are, or maybe before and after a brake or engine upgrade.