Print, Photographic

Sepia-toned photograph taken of a large dial display within the room housing the hydraulic elevator machinery at the River Rouge Factory Complex. The large dial has four needles, and a scale that runs from 0 to 27, likely representing the displacement of the elevator in feet. A bell, a series of four numbered lights, and a small pressure gauge are located beneath the large dial display. A series of pipes and valves are in the foreground. "26399-04-11[?]-19," is printed in the lower right corner of the recto. The photo is mounted on a linen backing.