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Kalianpur 1975 / India zone IVa
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Projected CRS used in India - mainland south of 15°N

Kalianpur 1975 / India zone IVa is a projected CRS last revised on May 6, 2021 and is suitable for use in India - mainland onshore south of 15°N. Kalianpur 1975 / India zone IVa uses the Kalianpur 1975 geographic 2D CRS as its base CRS and the India zone IVa (1975 metres) (Lambert Conic Conformal (1SP)) as its projection. Kalianpur 1975 / India zone IVa is a CRS for Large and medium scale topographic mapping and engineering survey. Used by India since metrication. Metric conversion applies A.R.Clarke's Indian foot-British foot ratio of 0.99999566 and J.S.Clark's 1865 British inch-metre ratio of 39.369971 rounded as 1 Ind ft = 0.3047995m exactly.

Kalianpur 1975 / India zone IVa Open in New Tab
Projected CRS Details
Name:Kalianpur 1975 / India zone IVa
CRS Type:projected
Area Of Use: India - mainland south of 15°NOpen
Coordinate System:Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.
Base Geographic CRS:Kalianpur 1975 Open in New Tab
Projection:India zone IVa (1975 metres)Open in New Tab