N.B. The _basis_ of _this_ and of _all other measures of
extension_, is the _Standard Yard_, established in 1760,—which
_remains unaltered_.
144 Square Inches, that is, 12 by 12, make 1 Square Foot
9 Square Feet 1 Yard
30¼ sq. Yards, or 272¼ sq. Feet 1 Pole
40 Sq. Poles, or Perches 1 Rood
4 Square Roods, or 160 sq. Rods. 1 Acre
30 Acres 1 Yardd. of Land
100 Acres 1 Hide of Do.
640 Sq. Acres 1 Sq. M. of Land
100 Sq. Feet 1 Sq. of flooring, &c.
272¼ Sq. Feet 1 Rod of brick work
⁂ Land is measured by Gunter’s Chain, which is divided into 100
links, each link 6 inches and 6-10ths long, and the whole Chain
being 4 Rods, or 22 Yards, or 66 Feet in length; so that 10 Chains
in length and 1 in breadth, or 4840 square Yards, make an Acre.
By this measure not only land, but all other superficies, such as
paving, flooring, plastering, roofing, tiling, &c. are measured.