the historical water gauge in Cologne from the 1950s with a mechanical water gauge shows a level of meters

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Size: 5507px × 3664px
Location: Cologne, Germany
Photo credit: © Gerd Harder / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 1950s, 20th, antique, aquatic, calibration, century, classic, cologne, device, engineering, gauge, german, heritage, historical, history, hydrology, hydrometer, infrastructure, instrument, landmark, level, management, measurement, mechanical, mechanics, monitoring, nostalgia, preservation, promenade, retro, rhine, river, riverfront, site, tech, technical, technology, town, urban, vintage, water