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MAA-53 Calibration Service for Aqua-Check is a recalibration of the MAA-45 Aqua-Check Pressure Gauge used with both the MA-26X Gilson Aqua-Check and the Speedy 2000 Moisture Testers. Periodic recalibration ensures continued accuracy and repeatable results of the gauge. For recalibration, the gauge must be returned to Gilson.
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