Measurement with six significant figure has a possibility of much greater accuracy than the measurement of only two significant figure.
Explanation:
When we measure an object in only two significant figures then we eliminate the possibility of getting close to higher accuracy as when the measurement is taken into six significant figures.
When we measure in six significant figures then we take the measurement into more finer fragments, we are able to measure very smaller variation as well. In other words we are taking the least count of the measurement to a more finer level than when measuring upto two significant figures.
