Yes, it is quite subjective. I find it helps to place the dot over a light background. When I think the dot's gone, I check the reading, then add some more liquid to see if it "goes away" even more. If it does, I take another reading
Yes, it is quite subjective. I find it helps to place the dot over a light background. When I think the dot's gone, I check the reading, then add some more liquid to see if it "goes away" even more. If it does, I take another reading
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