Patent ID: 7603790

Claim:
A measuring gauge for determining that a side seam envelope meets predetermined specifications comprising: (a) a flat transparent “L” shaped body including an elongated first arm forming the long side of the “L” shaped body and a second shorter arm disposed at ninety degrees to said first arm and at one end thereof; (b) a notch in said second arm defining a triangle with a first leg angularly disposed with respect to the outer edge of said second arm; (c) a first indicia carried by said first leg for indicating an in or out of specification of a first portion of an envelope; (d) a second indicia carried by the outer edge of said first arm for indicating an in or out of specification of a second portion of an envelope; (e) a third indicia carried by the inner edge of said first arm for indicating an in or out of specification of a third portion of an envelope; and (f) a scale carried by the outer edge of said second arm for determining in or out of specification of a window cut out in said envelope.