The bombsight of the Douglas A-26 Invader "City of Santa Rosa", on display at the Pacific Coast Air Museum in Santa Rosa, California.  See also <a href="//commons.wikimedia.org/wiki/File:A-26_Invader_City_of_Santa_Rosa_bombsight_1.JPG" title="File:A-26 Invader City of Santa Rosa bombsight 1.JPG">Image:A-26 Invader City of Santa Rosa bombsight 1.JPG</a>.
<a href="//commons.wikimedia.org/wiki/User:BrokenSphere" title="User:BrokenSphere">BrokenSphere</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>