Paragraph 4 Hexagonal
The form of hexagonal weight referred to in paragraph 1(iv) of the said Table shall be such that—
(a)
any horizontal section is a regular hexagon;
(b)
all the sides are flat;
(c)
the shortest distance across the base is not less than 80 per cent. nor more than 120 per cent. of the shortest distance across the top; and
(d)
the height is not less than 45 per cent. nor more than 55 per cent. of the shortest distance across the top or, if the base is smaller in area than the top, across the base.