Air Force Staff Sgt. Joseph Gerdes, 20th Component Maintenance Squadron precision measurement equipment laboratory craftsman, compares the readings of two gauges at Shaw Air Force Base, , Dec. 22, 2016. PMEL Airmen use gauges from their shop to test other equipment for accuracy. ( Air Force photo by Airman 1st Class Destinee Sweeney)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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Keywords: #callibration, #maintenance, #pmel, #precision, #readytofight, equipment, laboratory, maintenance