Backsight (BS) reading on bench mark = 2.325 m Reduced level (RL) of bench mark = 210.852 m Foresight (FS) reading at a station = 1.835 m Calculation: Reduced level (RL) of station A = RL of bench mark + BS reading – FS reading = 210.852 + 2.325 – 1.835 = 211.342 m