Sentinel boiler
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The Sentinel boiler was a design of vertical boiler, fitted to the numerous steam wagons built by the Sentinel Waggon Works.
Škoda-Sentinel "Super Sentinel" steam wagon
Section through a Sentinel boiler
Sentinel "5 tonner" steam wagon of 1906, with boiler dismantled for cleaning
Inner firebox of the later spiral design
Straker-Squire
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Straker-Squire was a British automobile manufacturer based in Bristol, and later Edmonton in North London.
Straker-Squire share certificate from 1917
1902 boiler, section
15 hp Mark 2 1912
Image: 1910 Straker Squire 2800cc, Nr 519, pic 15