![](http://www.alamy.com/thumbs/6/342A1BFF-F0B4-4F35-AC3A-FDF15A2C44BF/CRD1K9.jpg)
blue plaque marking the 19th century site where peter willans and mark robinson created the central valve steam engine
Size: 2618px × 3891px
Location: thames ditton, surrey, england, britain, uk, europe
Photo credit: © Mick Sinclair / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1800s, 19th, blue, britain, british, central, century, ditton, engine, england, english, europe, ferry, industrial, kingdom, mark, peter, plaque, plaques, robinson, steam, surrey, thames, uk, united, valve, willans, works