FYI...CAT scale has a cool new app where you can register with your credit card, then when you pull on the scale and enter the scale #, it charges your card and emails you the weigh slip, so you don't have to go inside. The app is called "Weigh My Truck" and it's in the app stores.
You need to do some setup on the app for it to work correctly, mainly entering name/address, company, credit card #, etc. I just made up a company name. It also asks you to enter a truck number and trailer number, I just entered 101 for the truck and 202 for the trailer.
We stopped at the Love's near Elkhart IN and drove on the scale, then opened the app on my phone. The app uses GPS to find the scale, then asks you to confirm the location. Charge was $12.50, and if you approve the charge, it will bill the card on file and immediately display your weights in the app. Within a minute, I had an email with a .pdf of the weigh slip signed by the scale operator in my inbox.
Saves a lot of time vs. having to use the speaker to talk to the attendant, go inside to get your ticket, etc.