1- You can view the layout of the FML-PDK reticle
here. Scroll down a bit.
And you can download the details here:
https://marchscopes.com/wp-content/uploads/2020/08/2020-Sept-4.5-28x52-P2.pdf In my picture about FOV comparison, the scope on the right is the one with the FML-PDK reticle. I'm posting the picture here so you don't have to chase it down.
View attachment 7439732 As for the large focus wheel, it's an accessory from March. It's called the middle focus wheel. It comes in 3 flavors depending on which focus knob you have. You can then elect to install one of the two large focus wheel on top of the middle wheel for ultra precise focus adjustment. I have just the middle wheel on my 4.5-28X52 and 1.5-15X42 as that is quite sufficient for my needs and I don't want to overload the riflescopes. However, on my March-X 10-60X56 HM, which I use in F-class competition, I have installed the large 3.5 in wheel as you can see here.
View attachment 7439739 You can find these accessories
here. Look for the middle focus wheel and the large wheel.
I hope that answers your questions.