Ro-1 , Ro-2 , Ro-4 , Ro-6 , Ro-9 , Ro-30
All of these can also be viewed at "Czech fuzes and igniters", different pages and photos.
Next to these mentioned above, there are also the following types (not used in Cz) :
Chemical Ro-2 ,
Were these fuzes made in more then one country? If anyone can shine a light on who made what, that would help.
If they all came from the same factories then I can save quite some webspace...