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GPS can be a pretty tricky subject to understand. A couple of useful points are:

• All points are given as UTM grid references. These grid references are metres east and metres north from a certain point (eastings and northings), which is determined by the UTM Zone. In Tasmania, the Zone is always 55G.
• All points co-ordinates on this site are given in the GDA94 datum. This supercedes supersedes the older AGD66 used on older Tasmaps, including all the original 1:25K maps. Check the legend section of your map to make sure the datum matches your GPS points.
• For our purposes GDA94 is equivalent to WGS84, which is the global standard.
• To convert from a GDA94 or WGS84 grid reference to AGD66, subtract 112 from the easting and 183 from the northing.

There is a good discussion of this stuff at http://www.utas.edu.au/spatial/locations/index.html^{Image Added} .

The table below shows all the GPS points recorded in the thesarvo guides. It is designed so as to be able to be imported into your GPS. There are a couple of things you can do with this data:

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