1. A computerized method for verifying manufacturing consistency of manufactured items, the method comprising: (a) reading N point clouds of the manufactured items from a storage unit, wherein N is a positive integer; (b) selecting a first point cloud from the N point clouds; (c) projecting each point of the first point cloud onto a predetermined ideal outline, to obtain a nearest point in the ideal outline of each point of the first point cloud; (d) selecting a point from the first point cloud; (e) determining intersections of the N point clouds and a line formed by the selected point and the nearest point of the selected point; (f) repeating (d) and (e) until all points of the first point cloud have been selected; (g) computing a vertical distance between each of the intersections and the ideal outline, to obtain a deviation value of each of the intersections; (h) fitting at least one outline according to the deviation values of each of the intersections; and (i) outputting the at least one fitted outline to a display device.