http://blog.english-heritage.org.uk/featured-object-queen-victoria-ceremonial-address-casket/

...and what about 'this'?

...conflated with 'pigeon' dazzlenation?

 

 

found on a 'related articles' link....

 

oh and I was to find another one too:

 

 

http://blog.english-heritage.org.uk/featured-object-ground-zero-indicator/

a ground zero indicator...the 'gizmo'...