oregon bar mounted filing jig

[andrewh]

I know this is the wrong forum but I am not getting any replies so here goes . I recently acquired an oregon jig that is a bit confusing from what I understand 33rm chain 30 deg top angle 10 deg tilt and 20% of file above cutter. on my jig 10 deg tilt is that high on outside of cutter I,m a bit confused about the 10 deg