polaroid 160 to 2 1/4 by 3 1/4
I was reading your post about the 110a and thought I would chime in. I have been butchering cameras since I retired from my studio. I read the information at the land list site.. http://www.rwhirled.com/landlist/landhome.htm
On a lark I decided to get a polaroid 150 or 160 to see how they were made. The 160 caught my eye since it was only a buck plus shipping from ebay. When it arrived, I decided that the polaroid pack conversion wasn't for me. I don't really like polaroid. I do like medium format, so I pulled out a graflex roll film holder. The one I had laying about was for the deminative graflex. I little JB weld and just a bit of knitting yarn to fill the tiny gap on the edges and I was finished.
The fact that the darn thing has EV exposiur and a funkly electronic flash terminal caused me just a bit of concern but I learned to adapt. I have several medium formats that have begun life with different lenses so wasn't really prepared for the surprise. The darn 'roid camera is by far the sharpest in my little collections of misfits. Just thought I would let you know how easy the conversion of the polaroid roll film cameras really is. Just be careful trimming the back and you get a pleasing body to.
I also readjusted the infinity focus but I doubt that it was necessary on the 160 since the fstop is 8.8 but on the 110 it would be a good idea i expect.