Ive just got my hands on a mtc viper 8-32 scope which is my first ever 'proper scope'.
Problem is I dont have a side wheel, so I dug around in the workshop and found two disc brake discs.
One 165mm and one 185mm. The 165 didnt fit as snug so I used an old plastic lid. It waa then too snug, but the 185mm sat properly.
Still need to find some plastic to go over the top to be able to make range markings.