So I finally got around to putting batteries in one of my Graflex's and testing it out. A few have come without the pilot/ test bulb, so I took one with me to the hardware store to find something similar. In the pictures below the brass colored is the original and the one next to it is what came with a Parks v1 glass eye. The replacements are a little longer but work just as well. I am going to stop at another store which sells a greater variety of bulbs to find a closer match. As you can see this one works, but the original Graflex bulb says 3.8V and the Parks is 4.5V. Im guessing either a 3.5 volt to 4.5 volt would work best. I will update with more information after I go back to get more bulbs.







