Abstract: A document to be verified or tested as a possible counterfeit is scanned by a system that optically senses a specific target area or aperture on the document. This area may include material deposited on the document or may be simply the document material. A reference grid is imprinted on the document to locate the same target area to be sensed each time the document is scanned, independent of the transport used to do the scanning. The reference grid is used to locate the target area both vertically and horizontally and signals sensed from the target area are combined to a representative composite.

Abstract: The disclosure relates to a boresight unit wherein an electro-optic package is disposed in a gun shell casing and loaded into the breach end of the main gun tube of a tank for use in boresighting visible or thermal gunsights. The package includes a laser aligned with the axis of the shell and main gun tube as well as an optical system for controlling the size of the light beam emanating from the laser. The gun is aligned by placing the boresight unit in the gun breech, making the appropriate adjustments to the gun and then replacing the boresight unit with a live shell.