1. A hand-size dimensional metrology imaging device, the device comprising: an imaging portion; a illumination stripe generating portion; a display portion; a signal processing and control portion comprising a scan acquisition portion and a surface map determining portion; wherein: the illumination stripe generating portion is arranged to illuminate a stripe on the workpiece surface, when a scan of the workpiece is performed; the imaging portion is arranged to provide a plurality of contour images corresponding to a plurality of positions of the illumination stripe on the workpiece surface during the scan; and the signal processing and control portion inputs contour image data and determines a surface map for a scanned portion of the workpiece surface, wherein the surface map comprises three-dimensional information corresponding to the scanned portion of the workpiece surface.