Question

Is there a difference in the accuracy of measurements of the reading if the
units used vary?
Why?​

Answer 1

Answer:

accuracy and precision come into play. ... In other words, accuracy describes the difference between the measurement and the part's actual value, while precision describes the variation you see when you measure the same part repeatedly with the same device.

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Answer 2

Yes,  the units used in the reading vary than we can say that there is a difference in the accuracy of measurements.

Because Accuracy reflects how close a measurement is to a known or accepted value, while precision reflects how reproducible measurements are, even if they are far from the accepted value.

Measurements that are both precise and accurate are repeatable and very close to true values.

Absolute error is defined as the difference between the measured value and the actual value of a quantity.

As accuracy is defined as how close the measured value is to the actual value, so the accuracy of measurement is determined by percentage error.