M30x0.75 female to M42x1 male thread adapter

• Front side - M30x0.75 female thread
• Rear side - M42x1 male thread (universal mount for Zenit/Praktica)
• Max. diameter - 48 mm
• Distance between flanges - 5mm
• Weight - 20 g

This adapter allows using some L Plan microscope objectives with M30x0.75 mount on M42 cameras or extension tubes/bellows.

Another application is optical block of LOMO OKS8-35-1 lens - you can use this adapter to mount it onto a focusing helicoid.

Machined from anodized aluminium.