(1)

The conversion of the previous datum to the current datum must be done by using the national coverage transformation grid from AGD66 to GDA94, mentioned in the notice `TRANSFORMATION OF COORDINATES TO THE NEW GEOCENTRIC DATUM OF AUSTRALIA (GDA94)', published in Gazette No. GN 40 on 10 October 2001.

(2)

The conversion of a geographic co-ordinate that is based on the previous datum into a geographic co-ordinate that is based on the current datum must be quoted to 2 decimal places of a second of latitude and of a second of longitude.

(3)

If, after conversion from the previous datum to the current datum, the geographic co-ordinates of a block indicate an area that is not exactly 5 minutes of latitude by 5 minutes of longitude, the area is nonetheless taken to be a block within the meaning of the Act.

(4) For subregulation (2), if the conversion results in a second measured to more than 2 decimal places, it is made accurate to 2 decimal places:

(a)

if the third decimal place is a digit equal to or greater than 5, by increasing the digit in the second decimal place by 1; or

(b)

if the third decimal place is a digit less than 5, by leaving the second decimal place unchanged.