Typical "panic bar" hardware for emergency egress.
Jonathan Clemens (<a href="//commons.wikimedia.org/wiki/User:Jclemens" title="User:Jclemens">Jclemens</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Jclemens" title="User talk:Jclemens">talk</a>))
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>