Method for measuring width and edge profile of a single board in a stack of multiple boards

A system for manufacturing a wallboard, the system comprising:

• a wallboard manufacturing line,
• one or more kilns configured for receiving wallboards from the wallboard manufacturing line,
• a post-kiln conveyor configured for receiving from the one or more kilns a stack of two or more wallboards, wherein a first wallboard and a second wallboard are aligned in the stack with a front long surface of the second wallboard covering a front long surface of the first wallboard, and wherein the second wallboard in the stack is a target wallboard, and wherein the post-kiln conveyor being configured for moving the stack with a cross-machine surface of the stack moving along the length of the post-kiln conveyor, and
• one or more 2D laser scanners configured to detect a gap between the first wallboard and the second wallboard positioned at a location which is at a distance from the post-kiln conveyor, the one or more 2D laser scanners having a view from the location of a cross-machine surface of the stack situated at a place along the length of the post-kiln conveyor;
• and
• wherein the one or more 2D laser scanners are in operable arrangement with a processor in operable arrangement with a non-transitory, computer-readable medium that stores a computer program which when executed by the processor, selects the target wallboard from the stack for calculations and computes a width and edge profile of the target wallboard in the stack.