While reading old history books, I am always at a loss to the units of measure used in different eras and locations. This page is to offer what I have found for others in the same position.
I hope this helps a bit.......1 arpent of land is about 5/6 of an acre. The same term is also used for linear measure, 192 feet.
Troy Weight
24 grains =1 pennyweight 20 pennyweight =1 ounce(480 grains) 12 ounces =1 pound Avoirdupois Weight used for all general merchandise
Avoirdupois pounds exceed Troy in the proportion of 17 to 14 nearly; Troy ounces are greater than Avoirdupois in the amount of 79 to 72.
16 drams =1 ounce(437 1/2 grains troy) 16 ounces =1 pound 14 pounds =1 stone 28 pounds =1 quarter 4 quarters =1 hundredweight(112 pounds) 20 hundredweights =1 ton(2240 pounds Apothecaries Weight used for dispensing drugs, etc
20 grains =1 scruple 3 scruples =1 dram 8 drams =1 ounce 12 ounces =1 pound Measures of length linear measure:
12 inches =1 foot 3 feet =1 yard 5 1/2 yards =1 pole, rod or perch 4 poles =1 chain 10 chains =1 furlong 8 furlongs =1 mile(1760 yards) 3 miles =1 league surveyers measure:
7.92 inches =1 link 100 links =1 chain 80 chains =1 mile 10 sq chains =1 acre Square Measure
144 sq inches =1 sq foot 9 sq feet =1 sq yard 30 1/4 sq yards =1 sq pole 40 sq poles =1 rood 4 roods =1 acre 640 acres =1 sq mile
To add to this we have an Irish, Scottish and Statute acre
1 Irish acre is about 1.2913 Statute acre
There has been some confusion about the actual size of these acres so the is a link here for you to decide for yourselves.
http://www.baronage.co.uk/bphtm-02/moa-10.htmlSolid or Cubic Measure
1728 cubic inches =1 cubic foot 27 cubic feet =1 cubic yard 5 cubic feet =1 barrel bulk shipping 40 cubic feet =1 ton shipping 40 cubic feet =1 load hard timber 50 cubic feet =1 load foreign fir Measure of Capacity used for liquids and dry goods
4 gills =1 pint 2 pints =1 quart 4 quarts =1 gallon 2 gallons =1 peck 4 pecks =1 bushel 8 bushels =1 quarter 5 quarters =1 load 36 bushels =1 chaldron
**a bushel of wheat on average weighs 60 pounds Barley 47 pounds Oats 40 pounds the gallon contains 10 pounds (avoidupois) of distilled water The Metric System: measure of Length
10 millimetres =1 centimetre 10 centimetres =1 decimetre 10 decametres =1 metre 10 metres =1 dekametre 10 dekametres =1 hectometre 10 hectometres =1 kilometre 10 kilometres =1 myrametre 1 metre =1.094 yards / 39.371 inches measure of Surface
10 centiares =1 deciare 10 deciares =1 are(100 sq metres) 10 ares =1 dekare 10 dekares =1 hectare 100 hectares =1 sq kilometre 1 hectare =2 acres, 1 rood, 35 poles measure of Weight
10 milligrams =1 centigram 10 centigrams =1 decigram 10 decigrams =1 grain 10 grains =1 dekagram 10 dekagrams =1 hectogram 10 hectograms =1 kilogram 10 kilograms =1 myriagram 1 kilogram =2 lb, 3 1/4 oz 1 pound Avoir. = .4535 kilograms measure of capacity
10 millilitres =1 centilitre 10 centilitres =1 decilitre 10 decilitres =1 litre 10 litres =1 dekalitre 10 dekalitres =1 hectolitre 10 hectolitres =1 kilolitre 1 litre =1 3/4 pints Some odd usefull data
1 hectolitre =22 imperial gallons 1 pood =36 pounds 1 ton(2240 lbs) =66.22 poods 1 U.S. gallon = 0.83 imperial gallons 6 U.S. gallons =5 imperial gallons 1 metric ton(1000 kg) =2204 pounds 1 metre =3 feet, 3 1/4 inches Metric / British conversions
1 centimetre =0.3937 inches 1 decimetre =0.3281 foot 1 metre =1.0936 yard 1 dekametre =1.9884 pole 1 hectometre =0.4971 furlong 1 kilometre =0.6214 mile 1 acre =0.0988 rood 1 hectare =2.4711 acres 1 sq kilometre =0.386 sq mile 1 centilitre =0.0704 gill 1 decilitre =0.1759 pint 1 litre =0.8799 quart 1 dekalitre =2.1997 gallon 1 hectolitre =2.7497 bushel 1 centigram =0.1543 grain 1 decigram =1.5432 grain 1 gram =15.4323 grains 1 dekagram =5.6438 dram 1 hectogram =3.5274 ounce 1 kilogram =2.2046 pound 1 myriagram =1.5747 stone 1 quintal =1.9684 cwt 1 millier =0.9842 ton Nautical Measure
6 feet =1 fathom 100 fathoms =1 cable length 6080 feet =1 nautical mile 3 nautical miles =1 sea league 60 nautical miles =1 degree Miscellaneous Weights and Measures
1 bag of: cocoa 112 lbs coffee 140-168 lbs hops 280 lbs pepper(black) 316 lbs pepper(white) 168 lbs rice 168 lbs sago 112 lbs sugar 112 - 190 lbs
1 bar gold mint = 400 oz troy
Barrels of liquors
firkin(1/2 barrel) 9 gallons kilderkin(1/2 barrel) 18 barrel 36 hogshead(1 1/2 barrels) 54 puncheon(2 barrels) 72 butt of ale(3 barrels) 108 anker 10 tierce 42 pipe of port 115 pipe of madeira 92 pipe of sherry 108 hogshead of brandy 60 hogshead of claret 45 hogshead of port 57 hogshead of sherry 54 hogshead of madeira 46 More Misc. items:
Bushel of barley 47 lbs bushel of coal 80 lbs bushel of oats 39 lbs bushel of rye 60 lbs bushel of wheat 60 lbs chaldron of coal 85 lbs chest of cloves 200 lbs chest of tea 84 lbs cord of wood 128 cubic feet cran of herrings 37 1/2 gallons hogshead of sugar 13 to 16 ctw hogshead of tobacco 12 to 18 ctw last of herrings 13,200 herrings last of hides 12 dozen last of wool 12 sacks load of hay or straw 36 trusses long hundred of herrings 33 warps or 132 herrings matt of cloves 80 lbs peck of flour 14 lbs pig of ballast 56 lbs pocket of hops 168 to 224 lbs quarter of wheat 480 lbs sack of coal 224 lbs sack of flour 280 lbs sack of potatoes 168 lbs sack of wool 364 lbs square of flooring 100 sq ft stack of wood 108 cubic ft stone of meat 8 lbs 10 hundred herrings 1320 herrings ton of hay 36 trusses truss of new hay 60 lbs truss of old hay 56 lbs truss of straw 36 lbs warp of herrings 4 herrings
