The DM3500 dimensioning systems use scanned, triangulated CCD camera / laser diode combinations to capture the height profile of a package as it passes the unit. The system includes an Accu-Eye laser photoeye and tachometer. The tachometer monitors conveyor speed. Package detection is accomplished by the photoeye. Based on this data, the DM3500 dimensioning system calculates the package length, width, height, volume and position.