Propeller of an <a href="https://en.wikipedia.org/wiki/Royal_Aircraft_Factory_F.E.8" class="extiw" title="en:Royal Aircraft Factory F.E.8">Royal Aircraft Factory F.E.8</a>,  in the <a href="https://en.wikipedia.org/wiki/National_Museums_Scotland" class="extiw" title="en:National Museums Scotland">National Museums  of Scotland</a>  in Chambers Street.
<a href="//commons.wikimedia.org/wiki/User:Ad_Meskens" title="User:Ad Meskens">Ad Meskens</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>