A dimensional measurement system comprises a plurality of operating arms simultaneously controlled and monitored by a computer system wherein each of the arms includes a support structure for a measurement end and includes orthoganally displaceable members enabling three dimensions of orthoganal movement of the measurement end. The displaceable members preferably comprise a first carriage slidably engaged with a support beam, a sliding beam slidably secured to the first carriage, a second carriage secured to the sliding beam, and a second sliding beam slidably secured to the second carriage, wherein the support for the measurement end is on the end of the second sliding beam. The beams preferably include racks engaged by motor driven gears to provide controlled displacement of the displaceable members. The computer system preferably simultaneously controls movement of the arms as well as delivery of workpieces to the arms.
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