Before revision: It was used in geodetic calculations, notably in military mapping and determining state borders.slide 11, Borodko It is remarkable that the Soviet Government initiated and consistently supported the work on SK-42 at the very gloomy and uncertain time of WWII, when the Nazi troops had deeply invaded USSR and controlled a large part of its European territory including what is now Moldova, Ukraine, Belorussia, and Baltic countries.
After revision: It was used in geodetic calculations, notably in military mapping and determining state borders.slide 11, Borodko