Quick Focusing Back for 2x3 Graphic Roll Film Backs (No20)
item #Slidingfocusingback120GraphicNo2. A 120 Graphic film back fits into the hole. You focus with the ground glass then slide over the back to take the picture. The plate is 6 3/8" tall with 2 metal pins at the top only. There is a rear lip which is 6 1
