A <a href="https://en.wikipedia.org/wiki/QF_3.7_inch_AA_gun" class="extiw" title="w:QF 3.7 inch AA gun">QF 3.7 inch AA gun</a>, on display at the World War Two Gun Emplacements, Hummock Hill, <a href="https://en.wikipedia.org/wiki/Whyalla" class="extiw" title="w:Whyalla">Whyalla</a>, South Australia
<a href="//commons.wikimedia.org/wiki/User:Bahnfrend" title="User:Bahnfrend">Bahnfrend</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>