More details on my secretaire post 4

I add some more details for my secretaire. It show´s the drawers´ underside is underlaying it´s sides. It´s showing the lock inside a drawer which is not placed inside the Wood but sticking out. It also shows the backside of the secretaire. Hope to find knowlege in how to read these details. Thankyou :)

This is post 4 of 4. I have written more in the first post.