The measurements must be accurate for the experiment to succeed.

Free from error or defect; precise and exact in measurements.
We need accurate data to make informed decisions.
The clock is accurate and keeps perfect time.
Her calculations were accurate, leading to the correct results.
accurate measurements
accurate results
accurate information
precise
exact
correct
The scale is accurate to the nearest gram.

Exactly matching a standard or measurement.
Her measurements were accurate for the project.
The report provides accurate data on sales.
He gave an accurate description of the event.
accurate measurement
accurate information
accurate results
correct
exact
precise
The GPS is very accurate.

Able to produce results that are consistently correct.
Her measurements are always accurate.
The report provides accurate data.
He gave an accurate description of the event.
accurate information
accurate results
accurate measurements
precise
exact
correct
The answer was accurate.

Correct and free from mistakes or errors.
Her measurements were accurate.
The report provided accurate data.
He gave an accurate description of the event.
accurate information
accurate results
accurate measurement
correct
exact
precise