Brand new 17mm recessed lens board for K.B. Canham and Toyo field 4x5 large format camera, e.g. 45A, 45A II, 45FA, 45CF.... Made of aluminum and anodized to black finished, lens board size 110x110mm.
Aperture: Off-Center Hole Copal #0
ProductiveTechnology: Computer Numerical Control(CNC)Precision Machining
Material: AL6061 Aircraft Aluminum Alloy
Surface Treatment: Hard Anodized