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Checking Nozzle Balance

1. Calibrate the air gaging system using the max and min masters in a normal manner.

2. Orient the tool with a horizontal centerline so the jets are situated vertical and located midway within the width of the maximum setting master. This will produce a readout indication at the high limit end of the tolerance zone on the scale. Note the exact readout indication.

3. Reposition the air tool so that the nozzles are reversed 180 degrees. Observe any difference in the indicator reading from step 1 above. Should a difference greater than one division on the scale be encountered, the tool should be considered for repair to correct "jet balance".

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