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Senior Airman Michael Sobecki, 8th Maintenance Squadron, precision measurement equipment laboratory technician, pours glycerin into a hydraulic pressure gauge at Kunsan Air Base, Republic of Korea, Oct. 3, 2012. The glycerin is used to stabilize the gauge needle   and insures an accurate reading. (U.S. Air Force photo/Senior Airman Marcus Morris)


PMEL calibrates equipment

Senior Airman Michael Sobecki, 8th Maintenance Squadron, precision measurement equipment laboratory technician, pours glycerin into a hydraulic pressure gauge at Kunsan Air Base, Republic of Korea, Oct. 3, 2012. The glycerin is used to stabilize the gauge needle and insures an accurate reading. (U.S. Air Force photo/Senior Airman Marcus Morris)

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