It's possible to put any 2D image onto a 2D game screen but having the functionality is another matter.
You're asking if the toggle switch of the German periscope can be placed onto the American screen. Yes, it can. Will it have the same function? Nope, It won't have a function at all. The problem isn't in putting the image where you want, but linking the image to a command that the game recognizes. The game recognizes the German periscope toggle switch image from the menu_1024_768.ini file [G26 I42] & [G26 I43] entries as being linked to raising/lowering of the scope. But, this "link" is done in the main game engine files which we don't have access to.
There
is a file called Commands.cfg, found in the Data\Cfg\ folder, but look all you want, there is nothing in there that links the image from the menu_1024 file to the "Toggle_RiseLower_whole_periscope" command. The Commands.cfg file is mainly for linking "keyboard keys" to commands, not mouse captured commands.
A long time ago, I tried to put the Navigation Tools onto the Attack Map so you could use the pencil or protractor as we do on the Nav Map. I could get them to appear as they do for the Nav Map, but nothing worked. There was no way of linking the function to the mouse control with the files we have access to.
Lately, I tried to place buttons onto the American Torpedo Panel, with the hope of having them linked to the function of "Toggle_open_close_torpedo_tube" as their command.
Nope, just been a waste of time.
Ideas, we got plenty of. Allowable ways of doing them are limited or nonexistent.