TABLE VI.
ROMAN MEASURES OF SURFACE.

Ordinary Land Measures. Acres. Roods. Perches. Square Feet.
Pes Quadratus ” ” ” ·9445
100 Scrupulum, or Decempeda Quadrata ” ” ” 94·245
480 4⅘ Actus Simplex ” ” 1 180·127
2400 24 5 Uncia[8] ” ” 8 83·885
3600 36 7½ 1½ Clima ” ” 12 125·83
14,400 144 30 6 4 Actus Quadratus ” 1 9 231·07
28,800 288 60 12 8 2 Jugerum ” 2 19 189·89[9]
57,600 576 120 24 16 4 2 Heredium 1 0 39 107·53[10]
5,760,000 57,600 12,000 2400 1600 400 200 100 Centuria 124 2 19 135·25
23,040,000 230,400 48,000 9600 6400 1600 800 400 4 Saltus 498 1 37 268·75[11]

[8] The As to which this Uncia and the above Scrupulum belong is the Jugerum. The other uncial divisions of the Jugerum may easily be calculated from the Uncia. The Semissis is, of course, the Actus Quadratus.

[9] i.e. almost 5-8ths of an acre.

[10] i.e. almost an acre and a quarter.

[11] i.e. almost 500 acres.