RMS female to M40x0.75 male thread adapter for Copal No.1 shutter

• Front side - RMS (0.8″ - 36tpi) female thread
• Rear side - M40x0.75 ,ale thread (fits front side of Copal No.1 shutter)
• Distance between flanges - 4mm
• Weight - 19g

This adapter allows using microscope objectives with RMS thread on Copal No.1 shutter with M40x0.75 mount.

Made of high quality aluminium alloy.