TW15 - I have a chart for osr for our Marconi. Give me a ring - I'll photocopy mine for you. It's an A model. Is that any different?
Marconis aren't great in osr & weren't really designed for it so treat with caution. I tend to trust my Sinar more (about the only time that happens!).
I have scanned in my Marconi calibration sheet as a pdf. How do I upload it here please?
Any one have an idea where to find the chart or slider for osr for a marconi tf 933c/d meter
Tested some osr at 38 on the wheat scale and did have a conversion sheet for osr but seems it gone walkies so a bit stuck . Help needed please