Talk to be given by Simon Ritchie. The Ordance Survey has been mapping the UK for over 200 years. Until recently they used simple mathematics, theodolities and a network of benchmarks and trig points to achieve one metre accuracy, a triumph of engineering in its day. This network is now redundant and beginning to need conservation, but nobody is picking up that responsibility.
SIHG Zoom Meeting. Industrial Archaeology in Plain Sight
Thursday, 6 October, 2022 - 10:00