Inquiry (采购产品): backflow device i would like to know if you calibrate Wilkins TG-3 Backflow test device's. I have one that I need to get calibrated. How much do you charge and what arrangements do i do to get it to you and how long does it take before i get it back. Thanks **** Hidden Message ***** Sean Frye 22602 Company: Sean's Lawn care & Irrigations Services LLC E-mail: seanslawncare4u@aol.com **** Hidden Message ***** seanslawncare4u@aol.com