Air Force Airman 1st Class Jeremiah Zimmer, 20th Component Maintenance Squadron precision measurement equipment laboratory journeyman, measures a steel cord at Shaw Air Force Base, , Dec. 22, 2016. Zimmer used the steel cords to suspend weights so that a tensiometer, which measures the tension of an object, could be calibrated.

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Keywords: #callibration, #maintenance, #pmel, #precision, #readytofight, archive, armed, defence, equipment, forces, laboratory, maintenance, military, reportage, servicemen, usa