Patent ID: 8578620
Filing Date: 2013-11-12
Classification: G01B,G03F

Abstract:
1. A measurement apparatus for measuring alignment of screen printed images, the measurement apparatus comprising: a body having a top surface and a bottom surface, said body having an opening extending between said top surface and said bottom surface; a first tang positioned at said bottom surface of said body and viewable through said opening; and a second tang positioned at said bottom surface and viewable through said opening, said first tang being fixed to said bottom surface and extending angularly inwardly so as to have an edge exposed through said opening, said second tang being adjustably movable relative to said first tang, said second tang extending angularly toward said first tang so as to have an edge exposed through said opening in adjustable spaced relationship to said edge of said first tang, said first and second tangs suitable for measuring an offset between the screen printed images.