Metal 32.5mm x .5 pitch lens lock ring (jam nut) to secure lenses or #0 shutters with 32.5mm diameter mounting thread to unthreaded enlarger or camera lensboards.
25mm to 39mm Leica thread adapter for mounting Schneider lenses with 25mm thread on 39mm lensboards.
Metal 25mm x .5 pitch lens lock ring (jam nut) to secure lenses with 25mm diameter mounting thread to unthreaded enlarger or camera lensboards.