Stop in for a cup of coffee

According to the Vinyl Engine, if (IF!) it still has the stock arm, the effective length is 230mm, and while I'm not 100% certain, I'm "reasonably sure" that's the same length as my old JMW-9.

I'll send myself a text to dig it out this weekend sometime (it's been a few years), "just in case".
Thanks Jim I think I read that length before on same site, don't know what to do with that except it sounds like it can be made to build your own protractor, not sure. I'll be poking around for a manual, would like to know the weight of the stock arm etc. Edit, I think I'll check vinyl engine for manual