[Klemm]

Yes MrJolly, thats a bombsight. But a dive-bombsight, so it could not be used for level bombing, but only for dive-bombing (the bombsight, of course!).
I hope you were aware of this.
Stuvi-Sturzvisier-divebombsight
EDIT: The Stuka has one and the Ju-88 too.