[Geographiclib-users] defining a projection (modified)

[hugh <hd...@bi...>]

Hi,
I am wanting to convert eastings and northings into lats and longs.
I am a civil engineer, not a surveyor, but have dabbled with
projections in the past so know a little.

I have been told my E / N are in a pseudo AMG (UTM) projection.  I have
been given the following parameters:


PSEUDO AMG 1966

Projection: Transverse_Mercator
False_Easting: 500000.000000
False_Northing: 10000000.000000
Central_Meridian: 145.000000
Scale_Factor: 1.000000
Latitude_Of_Origin: 0.000000
Linear Unit: Meter (1.000000)

Geographic Coordinate System: GCS_Australian_1966
Angular Unit: Degree (0.017453292519943299)
Prime Meridian: Greenwich (0.000000000000000000)
Datum: D_Australian_1966
  Spheroid: Australian
    Semimajor Axis: 6378160.000000000000000000
    Semiminor Axis: 6356774.719195305400000000
    Inverse Flattening: 298.250000000000000000


To me this looks like the standard UTM, except for the scale factor.
Is this correct?

Any someone suggest an open source library I can use to convert these
co ordinates into lats and longs.

Thanks
Hugh