means any survey station, including a town survey mark, erected by or under direction of the Chief Director as part of the national control survey system and for which he or she has published, or intends to publish, official co-ordinate values, and includes such other stations as may be prescribed.
[Definition substituted by section 8(b) of Act No. 61 of 1998 (Notice No. 1214, GG 19291, dated 28 September 1998]