APRIL 5--The results of first-quarter unit sales of DVT (Duluth, GA; www.dvtsensors.com) machine-vision systems show a dramatic increase of more than 33% over first-quarter 2003. The jump in unit sales comes on the heels of a record February that boasted an increase of 55% in sales and booking. Over the past ten years, the company has experienced a 37% compounded annual growth rate.