Anyone know what this is?

[vedubw]

I'm posting this for a friend.  Someone gave him this and they have no idea what it is.   

[lptools]

Hello, vedubw. Hard to tell from the photos. Regards, Lou

[leg17]

I wonder if it has something to do with precision inspection.
Three point bottom??
Can't really see the pictures too well.
Where did it come from?
An industrial or machine shop setting?