<a href="https://en.wikipedia.org/wiki/Difference_engine" class="extiw" title="w:Difference engine">w:Difference engine</a> at the <a href="https://en.wikipedia.org/wiki/Science_Museum" class="extiw" title="w:Science Museum">w:Science Museum</a>, <a href="//commons.wikimedia.org/wiki/London" title="London">London</a>, by <a href="//commons.wikimedia.org/wiki/User:Steinsky" title="User:Steinsky">Joe D</a> in January 2005.
<a href="//commons.wikimedia.org/wiki/User:Steinsky" title="User:Steinsky">Joe D</a>
CC BY-SA 1.0
<span class="int-own-work" lang="en">Own work</span>