M42 lens to OCT-19 mount adapter

This adapter allows you to use Zenit/Praktica m42 lenses on your Konvas-2M camera. Due to necessity to match flange focal distance, we had to protrude it inside the camera. This causes two problems:

1. This adapter will not fit Kinor-35.

2. Some m42 lenses will not fit it.

I have only two m42 lenses (Industar-50-2 and Helios-44-2). Both fit the adapter and focus fine. Focus and diaphragm controls are accessible.