Anyone knows from which aircraft this is?

Marcel said:

A friend of mine inherited this. As guy who had it originally was a researcher specialised in the B17, my friend thinks it is from a B17. But he's not sure. It's it possible or does anyone know where this instrument could come from? I've made some photos with my phone:
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2banaviator said:

I've never seen an elevator position indicator on any B-17 instrument panel (but I've not seen them all). I just checked my B-17F manual and its not there.
Looks like an early angle-of-attack indicator given its nose up/down indication.
It really looks to me to be a post WWII instrument. The mounting bracket method was not common in US WWII aircraft.
I believe that most US bomber aircraft were mainly 24vDC systems, and this indicator is marked 12v, another clue that its not a B-17.

I'm happy to be corrected!

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