Patent ID: 6625898
Filing Date: 2003-09-30
Classification: H01L

Abstract:
A metrology tool for aligning a cassette handler to a workpiece processing tool, wherein the cassette handler has a plurality of registration surfaces, each registration surface adapted to engage an alignment member of a cassette of workpieces, comprising:a fastener; and a frame having a removable alignment member adapted to emulate a cassette alignment member, said removable alignment member having a fastener surface adapted to be engaged by said fastener; wherein said fastener and said alignment member fastener surface are adapted to selectively fasten said removable alignment member to said frame in one of a first position and a second position which is offset with respect to said first position, wherein said frame emulates a first cassette when said removable alignment member is fastened to said frame in said first position and said frame emulates a second cassette when said removable alignment member is fastened to said frame in said second position.