For mounting lenses with 55mm x .75 mounting thread, such as the Schneider 150mm APO Componon HM. The flange is secured to the enlarger lensboard with screws, and the lens is then threaded into the flange. Please verify the mounting thread on your lens. Flange mounting screws are not included.
Note: Schneider 55mm flanges are typically supplied with 4 screw holes. Our custom flange has 8 holes. Only 4 screws are required; the additional holes are to provide greater flexibility in orienting the lens on the lensboard so that the aperture scale faces forward.
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