Try to find the spot where the photographer was standing.
I tagged these three images because they appear to be at the same location.
This looks like a shop that repairs test consoles or ground support equipment. A Hewlett-Packard meter with mirrored scale for parallax correction appears in the foreground at left. At center: this is an unidentified test console with pneumatic and electrical components. It doesn't appear to require calibration or configuration management as back is open. In the background, a chart recorder and other unidentified equipment. At lower right, the unit pictured appears to have a selenium rectifier, suggesting a 1960s photo. Your ideas are welcomed.