Thermo-Quad metering rod measures
Thanks DionR. That Vaanths guide is really good and has most of the information you can hope for.
But it doesn't have manufacturing drawings of individual parts. Since I don,t have a metering rod to start with I don't know the length of the rod and the positions of the steps. To try to find something that could be fitted I first need to know what I'm looking for. That's hard without a sample rod or length measures.