Picryl description: Public domain image of blueprint, engineering diagram, industrial design, early 20th century, free to use, no copyright restrictions.
Centrifugal governor Public domain photo of technical drawing, 20th century, free to use, no copyright restrictions image - Picryl description.
Book cover
Steam machines Public domain photograph of 19th-century drawing, free to use, no copyright restrictions image - Picryl description
Deutsch: Drehzahlregler nach James Watt
Watt's steam engine governor Public domain photograph related to motor parts, engines, free to use, no copyright restrictions image - Picryl description
Mid 19th-century steam engine in the 1875-built workshop at the former Goldstone Pumping Station (now British Engineerium), The Droveway, West Blatchington, Hove, City of Brighton and Hove, England.