(1) For the purposes
of this Act, the surface of the earth shall be deemed to be divided —
(a) by
the meridian of Greenwich and by meridians that are at a distance from that
meridian of 5 minutes, or a multiple of 5 minutes, of longitude; and
(b) by
the equator and by parallels of latitude that are at a distance from the
equator of 5 minutes, or a multiple of 5 minutes, of latitude,
into sections, each of
which is bounded —
(c) by
portions of 2 of those meridians that are at a distance from each other of 5
minutes of longitude; and
(d) by
portions of 2 of those parallels of latitude that are at a distance from each
other of 5 minutes of latitude.
(2) For the purposes
of this Act —
(a) a
graticular section that is wholly within the adjacent area constitutes a
block; and
(b) if a
part only of a graticular section is, or parts only of a graticular section
are, within the adjacent area, the area of that part, or of those parts,
constitutes a block.
(3) In this Act
—
(a) a
reference to a block that is constituted by a graticular section includes a
reference to a block that is constituted by the area of a part only, or by the
areas of parts only, of a graticular section; and
(b) a
reference to a graticular section that constitutes a block includes a
reference to a graticular section part only of which constitutes, or parts
only of which constitute, a block.
(4) Without limiting
subsection (2) of section 10, a datum is to be prescribed by regulations
referred to in that section for the purposes of the determination of the
position on the surface of the Earth of a graticular section or a block.
[Section 17 amended: No. 54 of 2000 s. 8(3).]