A set of suction heads can be mounted to the head carrier in any desired arrangement, corresponding to the desired chip arrangement on the circuit board, by having their holders removably engaged in selected ones of {HEAD ~ the array} of {TAIL ~ mounting holes} in the head carrier 
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A set of suction heads can be mounted to the head carrier in any desired arrangement , corresponding to the desired chip arrangement on the circuit board , by having their holders removably engaged in selected ones of { HEAD ~ the array } of { TAIL ~ mounting holes } in the head carrier
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