So many memories round here, looking back to my early working life I can remember the large rooms full of women typist, then the rooms full of drawing boards, some on stands and others bench and all the draughtsmen were men. Then when you wanted to look at a drawing there were these cabinets with large shallow drawers and all looked like furniture, ornate and highly polished. Also a few of the draughtsman smoked pipes! I think in some ways modern technology distances people from reality, they lose the feel and instinct, as mentioned giving non realistic dimensions on drawings and you get the same in metrology where people state temperature to six or more decimal places.
Looks like India was done before Airy did the UK in 1835, and in both cases with manual projections. I think in them days before Airy we were only concerned with parts the French may invade, ie south coast and kent.
In the early days both Fords and General motors just made cars and they sold them by the million, it was the Japanese who began market research and realised adding certain features was a selling point, that and also people would love cars that did not drip oil all over the driveway.Probably yes, the manufacturers would not have added all this technology if buyers were not looking for it, they do know their market, if not they go out of business.
The Great Trigonometrical Survey of India was a massive enterprise concerned with mapping and measuring all the territories of the subcontinent controlled by the British empire.
Looks like India was done before Airy did the UK in 1835, and in both cases with manual projections. I think in them days before Airy we were only concerned with parts the French may invade, ie south coast and kent.