Tag Archive for Tag: D.2 Precise calculation

Tag: D.2 Precise calculation Calculation of local scale factors in transverse Mercator projections

D.1 Quick calculation The ‘quick’ formula for calculating a scale factor is: where S0 is the central scale factor, E0 the false easting of the true origin and RE the mean radius of the earth. This formula is accurate to 2 parts per million at all places within 200 km of the central meridian, and to 50 parts per million

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