A method and apparatus which determine the location of one component on an article
relative to a datum position on the article at a first location in the manufacturing
process and then subsequently locating the datum position on the article at a second
location in the manufacturing process and determining if the distance from another
component to the datum position. The location of two components relative to one
another can be determined by comparing their positions relative to the datum position.
In a manufacturing process for producing articles such as children's training pants,
cameras and a radiation source can be utilized to determine the positions of fastening
components on the training pants when they are hidden within the pants.
