Thanks for the reply, Smkn.
Those are in my directions as well. I think that's for changing the conversion factor and the coefficient for the temperature compensation.
It appears that you have the 98129 and I have the 98130, and mine measures strangely compared to the norm. I'm not sure why it's like that, but I emailed the place I got the meter from asking them if I can switch it out for the 98129.
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