5 ms·
they usually used triangulation, the same as today. they select an line as the startimg point and measure it exactly as possible(doesn't need to be long) and th
by stop50 5y ago
they usually used triangulation, the same as today. they select an line as the startimg point and measure it exactly as possible(doesn't need to be long) and then you can calculate the rest with the measured angles of the area you want to measure. The rest is replicating it on paper with the required factor.
- pachico 5y agoThanks! It still a bit unclear to me but I'll dig more. Cheers
- ghaff 5y agoHere's an example from the original survey of India. https://apps.lib.umich.edu/online-exhibits/exhibits/show/india-maps/survey https://apps.lib.umich.edu/online-exhibits/exhibits/show/ind... In the US, if you hike, you'll often find circular USGS survey markers inset into mountain and hill tops.