Starting an aircraft's engine by swinging the propeller was a dangerous procedure which caused many injuries and a few fatalities among ground crew. In this case a Bristol Bulldog is being started up at Point Cook. The risk was reduced by using a mechanical device called the 'Hucks Starter'.
Courtesy Mrs Y.C. Bonwick
circa 1930 <div style="display: none;">date QS:P,+1930-00-00T00:00:00Z/9,P1480,Q5727902</div>–35
Coulthard-Clark, Chris (1991). <i>The Third Brother: The Royal Australian Air Force 1921–39</i>. North Sydney: Allen &amp; Unwin. <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-04-442307-1" title="Special:BookSources/0-04-442307-1">ISBN 0-04-442307-1</a>. p 336.