An alignment tool, method and system are provided for aligning a cassette handler to a robot blade in a workpiece handling system, in which the tool comprises a frame or fixture adapted to be supported by the cassette handler support surface, in which the frame has one or more distance sensors positioned to measure {HEAD ~ the distance} of a workpiece or {TAIL ~ robot} blade from the sensor or a predetermined reference point or surface 
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An alignment tool , method and system are provided for aligning a cassette handler to a robot blade in a workpiece handling system , in which the tool comprises a frame or fixture adapted to be supported by the cassette handler support surface , in which the frame has one or more distance sensors positioned to measure { HEAD ~ the distance } of a workpiece or { TAIL ~ robot } blade from the sensor or a predetermined reference point or surface
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