XL 40
L 50
LX 60
LXX 70
LXXX 80
XC 90
C 100
CL 150
CC 200
CCC 300
CCCC 400
D 500
DC 600
DCC 700
DCCC 800
DCCCC 900
M 1,000

WEIGHTS AND MEASURES

7.92 inches make 1 link.

25 links make 1 rod.

16.50 feet make 1 rod.

4 rods make 1 chain.

10 chains make 1 furlong.

8 furlongs make 1 mile.

320 rods make 1 mile.

5,280 feet make 1 mile.

10 square chains make 1 acre.

160 square rods make 1 acre.

640 acres make 1 square mile.

43,560 square feet make 1 acre.

69 geographical miles make 1 degree of latitude.

1,728 cubic inches make 1 cubic foot.

27 cubic feet make 1 cubic yard.

Gunter's chain, 22 yards of 100 links.

A section is 640 acres.

A township is 36 sections, each 1 square mile.

A span is 9 inches.

A hand--horse measurement--is 4 inches.

A knot--nautical--is 6,086 feet.

A fathom--nautical--is 6 feet.

A stone is 14 pounds.

A square acre is 208 7-10 feet on each side.

The metric system is the system of measurement of which the meter is the
fundamental unit. It was first adopted in France and is now in general
use in most civilized countries except the English-speaking countries.
The system is now used throughout the world for scientific measurements.
Its use was legalized in the United States in 1866.

The meter, the unit of length, was intended to be one ten-millionth part
of the earth's meridian quadrant and is nearly so. Its length is 39.370
inches. The unit of surface is the are, which is 100 square meters. The
theoretical unit of volume is the stere, which is a cubic meter. The
unit of volume for the purposes of the market is the liter, which is the
volume of one kilogram of distilled water at its maximum density and is
intended to be one cubic decimeter. For 10 times, 100 times, 1,000
times and 10,000 times one of these units, the prefixes, deca-, hecto-,
kilo- and myria- are used. For 1-10, 1-100 and 1-1,000 of the units, the
prefixes deci-, centi- and milli- are used.

In this table the equivalents are measures common in the United States
and are not to be confused with British measures, which in some cases
vary slightly.

1 myriameter