  Manual photo flash unit. 
Lovely antique flash powder igniter.  You wind it up just like a wind-up toy, and when you pull the trigger a wheel spins against a flint, generating sparks that ignite a small pile of flash powder.  Obviously used, but probably not for several decades.  If anyone knows what the likely age of this device is, I'd love to know. 
Source: eBay 
Contributor: Theodore Gray 
Acquired: 2 April, 2009 
Text Updated: 3 April, 2009 
Price: Unknown 
Size: 6" 
Purity: 0%
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