Wrightsoft Corporation's automatic scaled drawings are designed to provide HVAC system designers with scaled, plan view drawings of ductwork to make it obvious what the ductwork should look like, and how it should fit into the building. Wrightsoft programs automatically calculate the airflow and size of each fitting using ASHRAE's duct fitting database, and then Wrightsoft programs automatically look up the fitting drawing, and automatically draw the scaled fitting in the correct orientation.