The meridian distance (m) from the equator to Stromlo Trig along the line of longitude at 'sea level' = 3,909,857.2463 metres. It is calculated using the expression given in paragraph 4.3 of the abovementioned SP10 document.

The distance (mk0) from the Equator to the False Origin for Northings, that is, a point 600,000 metres south of Stromlo Trig, is comprised of the true distance from the Equator to Stromlo Trig, multiplied by the above Combined Scale Factor (k0).

(3,909,857.2463 x 1.000 086) + 600,000.000 = 4,510,193.494 metres. This is the quantity that is used as the 'False Northing' for software development.

The False Easting is 200,000.000 metres.

ACT Standard Grid Coordinates of Stromlo Trig

E 200,000.000 metres

N 600,000.000 metres

For further information, refer to:

Wellspring, K.H. (1973). Some aspects of the conversion from imperial to metric co-ordinates in the Australian Capital Territory. Technical Papers of the 16th Australian Survey Congress, Canberra. [1.3 MB]