Thanks for that, Wayne. Great service as always. I'll have to try it, once I've digested and understood the procedure.
Question for you. Have you found that the meter goes out of calibration significantly, so that it should be recalibrated from time to time? I mean as a suggested or recommended procedure, as against just an interesting exercise.
Also, how much "error" should be apparent before it becomes advisable to make adjustments, and how does one actually go about doing that? In my own case, I'd be a bit reluctant to start fiddling with it unless I really need to, because of the possibility of messing things up. I have no doubt that your initial calibration was spot on, and probably much better than anything I would do.
Thanks again for the fine product and service.