Quote Originally Posted by Roger Cole View Post
You can measure the ground glass from the side you can see. I can see it in the photo. Just use a tape measure. The difference between 3.25x4.25 and 4x5 is easy to see and measure. Precision is not required.
Ok well now I'm thoroughly confused.

I took a tape measure to the back. The ground glass is 4x5.

But the film holders are 4x5