U.S. Air Force Airman 1st Class Michael Williams, 18th Component Maintenance Squadron test, measurement and diagnostic equipment technician, calibrates a micrometer May 10, 2016, at Kadena Air Base, Japan. Micrometers are used to measure small linear distances with great precision and are used by TMDE technicians to calibrate equipment. (U.S. Air Force photo by Senior Airman Omari Bernard)
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