I'll answer my own question here the data I've got looks like it's related to this..
http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid On Mon, May 9, 2016 at 5:22 PM, Bruce Bannerman <b.banner...@bom.gov.au> wrote: > Hi Matt, > > It is possible that the data is based on the Australian National Grid > using Clarke 1858. See: > > > http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid > > Bruce > ------------------------------ > *From:* Qgis-user <qgis-user-boun...@lists.osgeo.org> on behalf of Phil > (The Geek) Wyatt <p...@wyatt-family.com> > *Sent:* Monday, 9 May 2016 4:01:01 PM > *To:* 'Matt Boyd'; 'qgis-user' > *Subject:* Re: [Qgis-user] Projection / Custom CRS help > > > Here is a good place to start for information on older datums. > > > > > http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-map-grid > > > > > http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia > > > > But I would be trying AGD66 first as the most likely contender at that > time. > > > > Cheers - Phil > > > > *From:* Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] *On Behalf > Of *Matt Boyd > *Sent:* Monday, 9 May 2016 2:07 PM > *To:* qgis-user > *Subject:* [Qgis-user] Projection / Custom CRS help > > > > Hi QGISer's, > > I've got some data acquired in Australia in 1967. The acquisition reports > mention a false easting and northing and a TM projection. > > I'm assuming TM means Transverse Mercator. > > It's early 1967 data and doesn't mention AGD66 anywhere. However a some of > the reference docs mention measurements in yards and feet. > > > > All of the historical analysis of the data that I can find dates back to > the early 1980's and late 1970's and these all assume AGD66. > > > > I would like to be able to create a custom CRS that I can load the > original data into (or a smaller portion of it) to confirm that the data > has been transformed over the years correctly. > > > > Is anyone familiar with pre-AGD66 projections in Australia and any idea > how I'd go down this road? > > > > Thanks > > Matt >
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