Dictionary of Greek and Roman antiquities. Ed. by William Smith. Illustrated by numerous engravings on wood.

ROMAN MEASURES OF LENGTH.
Decimals of a
II. LARGER MEASURES.-LAND AND ITINERARY. Mile. Miles. Feet. Inches.
IPES - O _ 11 - 0001838,,,, 1116496
l1 |Cubitus.-. - | 0002757,, 1 5'4744 |
21 1- Gradus, or Pes Sestertius -.. 0004596,, 2 5' 124 o
5 2 PS3 2 SPASS - - 0009193,, 4 10-248
10 6z- 4 2 Decempeda, or Perfica - - 001838,, 9.8496
120 80 48 24 12 Actus (in length) - - 2206,, 116 5'952.
5000 3333k 2000 1000 500 41 ILLE PASSUUe - -'9193,, 4854,,
7500 5000 3000 1500 750 621 11 Gallic Leuga - 1379 1 2003
375,000 250,000 150,000 75,000 37,500 3125 75 50 DEGREE - 68'9488 68 5110,,
(1) NOTES TO TABLE III.
* In order to show the relations more clearly, the foreign measures most familiar to the Greeks are included in this Table.
t This is, of course, not the true number of English statute miles contained in a degree of a great circle of the earth, but the number computed from the data
exhibited in the Table, some of which are only approximate; namely, 1 Degree=75 Roman miles=600 Greek Stadia, and 1 Greek foot =12135 inches. The
true value of a degree in English miles is 69= 69'0196, and the difference is only about 7-100ths of a mile.
(2) NOTES TO TABLE IV.
See AcTus and MENSURA. t See Note to Table III.
N. B. - The Roman mile only differs from the English by less than 1-10th