Greg Galvin, 88th Civil Engineer Group civil engineer technician, looks at the barcode level rod through the Trimble DiNi level at Wright-Patterson Air Force Base, Ohio, Sept. 8, 2016. The Trimble DiNi works by scanning a digital barcode level rod, which sends the machine a binary code the machine computes into a height above the ground. CE is working on a project to find the elevations of multiple settlement markers located in landfills 8 and 10 which are located off of Kauffman Avenue at WPAFB. ( Air Force photo by Michelle Gigante/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: civil, engineering, people