The eyepieces are both WHK 15x L.
I ordered the Olympus eyepiece graticule 20.4mm ... It should be the right eyepiece graticule ...
But i can not understand how to fit it in the eyepiece.
I followed this video ( https://www.youtube.com/watch?v=xZQWr_Z54MQ ) but i don't get a clear focus on the eyepiece Reticle
Maybe am i missing soms part needed to put the graticule?
this is my eypiece
https://ibb.co/dfTj7Ct
What am i doing wrong??