Re: langstroth window?
Welcome to Beesource!
One issue with you plan as presented above is that you would be reducing "bee space" by just putting the glass on the inside of the wood hive wall. To solve that problem, once you have cut the window opening, you would need to remove enough wood from the wall to be able to recess the glass so that the inner edge of the glass is flush with the inside of the hive.
Other than that, I'd suggest placing the window on the short wall (16.25" wide on a 10 frame box). This would allow you to see the ends of multiple frames. If you place it on the long wall, all you will see is the outside of the last comb. Note that the short wall is the one that supports the frames, so be sure to leave enough wood to provide adequate support.
. . . . . . "those who want to see, can see". - - [Oldtimer - 2016]