A question about hinges

I want to hinge a piece of board so that it can fold back on itself, but be totally flat when the board is open.
Can this be done?

When the board is open I need the the topline to be flat i.e. nothing protruding above the board.
Hinge 1.jpg

Hinge 2.JPG



The board needs to be able to fold completely back on itself.
Hinge 3.jpg

Attached Images

• Hinge 1.jpg (205.6 KB)
• Hinge 2.JPG (207.8 KB)
• Hinge 3.jpg (193.6 KB)