Mystery Tool

Some years ago I came across this interesting tool for BMW motorcycles.  To be perfectly honest, I don't remember where it came from.  It is marked "Gift of David Ide". 

I don't know David Ide, but have benefited from his "gift" many times.  I have to assume David was a tool maker, machinist, or BMW enthusiast.  Perhaps all three.  

Any guess as to what this tool is for?  Scroll down for the answer.  

A wonderful little wrench for removing the top of the BING carb slide chamber!