Abstract: A method of digitizing a three dimensional object 10. The method using a point digitizer which defines the envelope dimensions 11, 12, 13, 14, 15 and 16 of the object 10 and uses a cloud data capture technique to acquire data points as a pen-element of the digitizer is scrubbed or randomly moved across the object 10 surface. The data points being processed by the digitizer to produce a plurality of object contours between opposed edges of the envelope dimension 13, 14, 15, 16 at spaced points Sj, Ej respectively. These object contors defining the object 10 shape for digital mapping within a computer aided design (CAD) system.