BENCHMARKS continued
An email correspondent has taken up the challenge and supplied a German benchmark. Apparently it is on the railway station frontage in the town of Bad Hersfeld in the Hessen region of Germany and dates from the year 1883. The brass plate simply records the altitude in metres, to 3 decimal places – incredible accuracy. The actual point of measurement would be the centre of the brass plug to the left. This appears to have been damaged as it should extend further out. Notice that someone disagrees with the altitude displayed on the plaque (perhaps using satellite technology) and has written what he/she believes to be the correct altitude, making a difference of +44 m.m., if Benchmarker's calculation is correct.
Below: The benchmark, and the Railway Station at Bad Hersfeld, Germany.
