1. A method of digitising a three-dimensional object using a point digitiser, the method including the steps of: a) presenting the object to the point digitiser such that at least a first part of its respective envelope dimensions in the X, Y, Z-axes planes are determined; b) scrubbing the point digitiser across the surface of the object such that random spacial data points are collected as a cloud data set; c) at spaced positions about the envelope dimensions determining best fit line projections from the spacial data points in the cloud data to create for each spaced position an object contour which defines the shape of that object in the projected plane of each respective spaced position; and d) consolidating each part digitized through steps (a), (b) and (c) above and, in particular, the object which represents the three-dimensional shape of that object.