Originally Posted by youpi

Yes I understand all of this steps but I saw this video too and that's why I ask you because in the video at one time he says if the target it too near you can't use the zoom X6 for counting the graduations (in the video there is two zoom for the periscop). So use normal zoom (x1.5) and use the mark next to the 15° for find the AOB.

But this tutorial was made with an oldier version of OLC and now there's no zoom in the periscop attack.

I don't know if my english is understandable