Senior Airman Kasey Weidman, 4th Component Maintenance Squadron test, measurement and diagnostic equipment technician, prepares to calibrate a caliper using gauge blocks, Nov. 18, 2015, at Seymour Johnson Air Force Base, The precision measurement equipment lab handles anywhere from 20 to 60 items on a daily basis. ( Air Force photo/Airman Shawna L. Keyes)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 4th, air, base, cms, component, diagnostic, equipment, force, johnson, lab, maintenance, measurement, pmel, precision, seymour, squadron, test, tmde