How will GDA affect maps?
The detail on maps will appear to shift, relative to the map grid. The magnitude of this shift depends on the map scale (divide 200 metres by the map scale to assess the effect). At 1:1,000,000 the shift is barely significant at 0.2 mm. It is 0.8 mm on a 1:250,000 scale map and 2 mm at 1:100,000 scale.