OK you tonearm geometry wizards- I have a "new" to me SR 717 with the knife edge type tonearm- the only specs I have are from the VE sourced brochure. Tonearm effective length= 230mm. Offset= 22 degrees. Overhang= 16mm. Which protractor should I use? I have an OM 10 on an aftermarket shell as of now, but I have a DL-110 on the way.
