Teapplix support reading scales by using "PrintNode", a commercial service. You will need an account from www.printnode.com.
To setup scales reading, open a PrintNode account, then go to Teapplix "Setup => PrintNode" to enter the API credentials.
After that, you will be able to select your scales in Setup => Printers & Scales. Each shipping profile can set it's own scales.
When you click on "options" to any order that is unshipped, you will see a button to read from scales, the value will populate into ship weight and if you press save, will automatically save onto the orders.
We support any USB scale that PrintNode supports. go to www.printnode.com for details.