WEIGHTS AND MEASURES
THE METRIC SYSTEM
- Multiples which are used equally
with all the principal units
- M (myria = 10000)
- K (kilo = 1000)
- H (hekto = 100)
- D (deka = 10)
(NOTE. These are Greek numerals)
- Divisions which are used equally
with all the principle units
- d (deci = .1)
- c (centi = .01)
- m (milli = .001)
(NOTE. These are Latin numerals)
| Kinds of Quantities Measured | Principal Units | Definitions |
|---|---|---|
| Length | m (meter) | |
| Area | sq. m (square meter) | |
| a (Ar) | 1 sq. Dm. | |
| Volume | cu m (cubic meter) | |
| s (ster) | 1 cu. m. | |
| l (liter) | 1 cu. d m | |
| Weight | g (gram) | Weight of 1 cu. cm. of pure water at 4° centigrade |
NOTE. 1000 kg. is called t. (a metric ton.)
LINEAR MEASURE
- 12 in. = 1 foot
- 3 ft. = 1 yd.
- 5 1⁄2 yds. = 1 rod
- 320 rds. = 1 mile
- 5280 ft. = 1 mile
- 3 miles = 1 league
The hand (4 in.) is used to measure the height of horses. The nautical mile is 6086.44 ft. 1 knot is 1.1528 statute miles. 1 degree is 67.168 statute miles.
SQUARE MEASURE
- 144 sq. in. = 1 sq. ft.
- 9 sq. ft. = 1 sq. yd.
- 30 1⁄4 sq. yds. = 1 sq. rod
- 160 sq. rods = 1 acre
- 640 acres = 1 sq. mile
The side of a square having an area of an acre is approximately 208 3⁄4 feet.
DRY MEASURE
- 2 pints = 1 quart
- 8 quarts = 1 peck
- 4 pecks = 1 bushel
LIQUID MEASURE
- 4 gills = 1 pt.
- 2 pts. = 1 qt.
- 4 qts. = 1 gall.
- 31 1⁄2 gall. = 1 barrel
- 2 barrels = 1 hogshead
APOTHECARIES’ WEIGHT
- 20 grains = 1 scruple
- 3 scruples = 1 dram
- 8 drams = 1 ounce
- 12 ounces = 1 pound
AVOIRDUPOIS WEIGHT
- 16 drams = 1 ounce
- 16 ounces = 1 pound
- 100 pounds = 1 hundredweight
- 20 hundredweights = 1 ton
Long ton = 2240 pounds, used mostly in Great Britain.
TROY WEIGHT
- 24 grains = 1 pennyweight
- 20 pennyweights = 1 ounce
- 12 ounces = 1 pound
1 carat in diamond, measure = 3.2 Troy grains.
PAPER MEASURE
- 24 sheets = 1 quire
- 20 quires = 1 ream
- 2 reams = 1 bundle
- 5 bundles = 1 bale
TIME MEASURE
- 60 seconds = 1 minute
- 60 minutes = 1 hour
- 24 hours = 1 day
- 7 days = 1 week
28, 29, 30, or 31 days = 1 calendar month
(30 days = 1 month in computing interest)- 365 days = 1 year
- 366 days = 1 leap year
CIRCULAR MEASURE
- 60 seconds = 1 minute
- 60 minutes = 1 degree
- 30 degrees = 1 sign
- 90 degrees = 1 quadrant
4 quadrants = 12 signs, or 360 degrees = 1 circle
CLOTH MEASURE
- 2 1⁄4 inches = 1 nail
- 4 nails = 1 quarter
- 4 quarters = 1 yard
MARINERS’ MEASURE
- 6 feet = 1 fathom
- 120 fathoms = 1 cab. le’th.
- 7 1⁄2 cable lengths = 1 mile
- 5280 feet = 1 stat. mile
- 6085 feet = 1 naut. mile
MISCELLANEOUS
- 3 inches = 1 palm
- 4 inches = 1 hand
- 6 inches = 1 span
- 18 inches = 1 cubit
- 21.8 in. = 1 Bible cubit
- 2 1⁄2 ft. = 1 military pace
SURVEYORS’ MEASURE
- 7.92 inches = 1 link
- 25 links = 1 rod
- 4 rods = 1 chain
- 10 square chains or 160 square rods = 1 acre
- 640 acres = 1 sq. mile
- 36 sq. miles (6 miles sq.) = 1 township