I use mine. I'll put up some pix here. I have a few of them. The large 846 is about 21" diameter and claims to hold 100 chicken eggs. The smaller 845 is 16" diameter and holds 50 chicken eggs. A pie pan will be quite a bit larger than the original pan but should work OK. Humidity is controlled by the surface area of the water that is exposed to evaporation. This can be adjusted by covering a portion of the surface of the water with aluminum foil.
Here is the overall outside view of an 846.
Inside the top.
Inside showing the size of the original water pan. Please excuse the mess. It needs a thorough cleaning before I fire it up this spring.
Here's an original 1980 sears catalog page showing the 2 Brower tin incubators.
Back in the day Brower offered a turning ring quite similar to the Turn-X incubator set-up. An outside lever allowed you to turn all the eggs at once. I mark the eggs with Xs and Os and hand turn 3 times a day.
I have the operating and parts manuals for these saved on files on my computer. Anyone needing or wanting a copy can pm me their email address and I will be happy to send off a copy.
Edited by dbcooper02 - 2/5/12 at 8:11am