Changing Bulb on Artograph Prism Opaque Projector

Also see:

Artograph Prism General Description

Taking it apart.

Putting it back together.

First notice that the glass is beveled on two sides (and obviously not beveled on the other two sides).

Orient the glass with the bevels in this position.  The angle of the bevels (short sides) should be pointing UP (as in the above picture).

Reattach Screw Assembly

Replace lid.