The old Cornish units of measurement were used in the 1700s and based on English measurements in their name and rough size, although had slight difference in their values. [1]
| Unit | Relative to Previous | Square yard | Cornish Acre |
|---|---|---|---|
| Cornish Fathing Land | 12 Knight's Fee | 145200 | 48 |
| Cornish Knight's Fees | 4 Cornish Acres | 12100 | 4 |
| Cornish Acre | 4 Cornish Ferlings | 3025 | 1 |
| Cornish Ferling | 9 Cornish Rods | 756.25 | 1⁄4 |
| Cornish Rod | 5 Cornish Leases | 84 | 1⁄36 |
| Cornish Lease | 2 Cornish Lorghs | 16.8 | 1⁄180 |
| Cornish Lorgh | 4 Cornish Sticks | 8.4 | 1⁄360 |
| Cornish Sticks | 1⁄4 of a Cornish Lorgh | 2.1 | 1⁄720 |
Richard Carew's Survey of Cornwall (1602) says: [2]
Commonly thirtie Acres make a farthing land, nine farthings a Cornish Acre, and foure Cornish Acres, a Knights fee. But this rule is ouerruled to a greater or lesser quantitie, according to the fruitfulnesse, or barrennesse of the soyle.
Cornish acre – 120 statute acres (or possibly 64), 8 score lease. Equal to 0.066 Acres. Cornish ferling/farthing – ¼ a Cornish acre Cornish lease – four sticks Cornish stick – four yards, three yards square Cornish Knight's fee – four Cornish acres Cornish rod – 160 lace to a Cornish acre, 36sq. rods Cornish lace – 18 ft square Cornish land rod/lorgh – half a lace, 9 ft square
| Unit | Equivalent |
|---|---|
| Cornish Fathom | 5 ft |
| Cornish Mile | 1.5 miles |
| Unit | Equivalent |
|---|---|
| Cornish Bushel | 3 Winchester bushels |
| Cornish gallon | 10 lb |
| Cornish apple gallon | 7 lb |
| Unit | Equivalent |
|---|---|
| Cornish ton/mining ton | 21 cwt |
| Cornish pound | 18 ounces (butter) |
| Unit | Relative |
|---|---|
| Cornish Warp | 4 Fish |
| Cornish Burn | 21 Fish |
| Cornish Hundred | 132 Fish |
| Cornish Mease | 505 Herrings |
| Cornish Cran | 800 Herrings |
| Cornish Long Hundred | 8 times 120+5 Fish |
| Cornish Last | 132,000 Fish |
| Cornish Ounce | 16th part (of either a sein of fish or property) |
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