Keywords
50s, 55-59 years, adjusting, american, caucasian, control, control panel, engineer, equipment, examining, expertise, fifties, focus on foreground, industrial, industry, inspector, lab, laboratory, looking down, machine, machinery, maine, mature adult, metal, metallic, north america, north american, one person, outdoors, pipe, portland, professional occupation, quality control, sensor, sewage treatment plant, shadow, side view, skill, standing, sunlight, technological, technology, united states, us, usa, valve, water department, water purification plant, water testing, water treatment, water treatment plant, white, working, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u54337170