The carpenter is just not too concerned that his measurement is less precise than the nanotechnologist, but it is still accurate, since his measurement tools were calibrated according to the standard. That is why we have the Bureau of Standards, now called the National Institute of Science and Technology.
Do I have to explain the difference between accuracy and precision? Geez, go back to high school.
I understand the difference between accuracy and precision. I am not talking about either. I am talking about language.