In playing with my Speed Graphic this evening to see if it would focus a 65mm lens (it will), I made another discovery: A Sinar Norma ground glass carrier will slip into the Graflok back of a Graphic camera. The Sinar ground glass really is nicer than the Graphic, and it allows one to use the Sinar clip-in Fresnel. The Sinar ground glass also has notched corners, which is probably only useful for a couple of lenses (long enough to be outside the box but short enough to have marginal coverage--the 127 is the best example).
The next tidbit is that a Speed Graphic folding hood will clip into the ground glass frame of a Norma, though not at the same time as the Fresnel. (I really stole this idea from Glenn Evans's web page.) Need a gg protector for your Norma? (No, it won't work with an F or a P--it needs those Norma side clips.)
And the third tidbit is that once a Norma ground glass frame is on a Speed Graphic, it allows one to use masks for roll-film formats using a Vario/Zoom holder.
I was going to use the Norma ground glass frame with some spare F parts to make my own "Handy", but I already have the Speed Graphic and can make that work, like, tomorrow.
Rick "no Sinar parts were injured in the making of this post--insulted, maybe, but not injured" Denney