If the digit after the least significant digit > 5, increase the digit by one: (2.327 m ≈ 2.33 m).
If the digit after the least significant digit < 5, keep the digit as it is: (2.323 m ≈ 2.32 m).
If the digit after the least significant digit = 5, increase only if digit is odd
(this reduces systematic error due to rounding): (2.325 m ≈ 2.32 m); (2.335 m ≈ 2.34 m).