An <a href="https://en.wikipedia.org/wiki/en:Isotta_Fraschini_V.4" class="extiw" title="w:en:Isotta Fraschini V.4">Isotta Fraschini V.4B</a> 6-cylinder inline engine from WWI on display at the <a href="https://en.wikipedia.org/wiki/en:Gianni_Caproni_Museum_of_Aeronautics" class="extiw" title="w:en:Gianni Caproni Museum of Aeronautics">Gianni Caproni Museum of Aeronautics</a>.
<a href="//commons.wikimedia.org/wiki/User:MLWatts" title="User:MLWatts">MLWatts</a>
<span class="int-own-work" lang="en">Own work</span>