Страница - 147Страница - 149WEIGHT OF CAST IRON BALLS.
| | Lbs. |
| 2 | inch | diameter | 1.09 |
| 2½ | “ | “ | 2.13 |
| 3 | “ | “ | 3.68 |
| 3½ | “ | “ | 5.84 |
| 4 | “ | “ | 8.73 |
| 4½ | “ | “ | 12.42 |
| 5 | “ | “ | 17.04 |
| 5½ | “ | “ | 22.68 |
| 6 | “ | “ | 29.48 |
| 6½ | “ | “ | 37.44 |
| 7 | “ | “ | 46.76 |
| 7½ | “ | “ | 57.52 |
| 8 | “ | “ | 69.81 |
WEIGHTS AND MEASURES.
AVOIRDUPOIS OR COMMERCIAL WEIGHT.
| 16 | drachms | 1 ounce. |
| 16 | ounces | 1 pound. |
| 14 | pounds | 1 stone. |
| 28 | pounds | 1 quarter. |
| 4 | quarters | 1 cwt. |
| 2240 | pounds | 1 long ton. |
| 2000 | pounds | 1 ton. |
SQUARE MEASURE.
| 144 | square | inches | 1 | square | foot. |
| 9 | “ | feet | 1 | “ | yard. |
| 30¼ | “ | yards | 1 | “ | rod. |
| 40 | “ | rods | 1 | “ | rood. |
| 4 | “ | roods | 1 | “ | acre. |
| 640 | “ | acres | 1 | “ | mile. |
TABLE OF DISTANCE.
| A mile is | 5280 | feet or 1760 yards. |
| A knot is | 6086 | feet. |
| A league is | 3 | miles. |
| A fathom is | 6 | feet. |
| A metre is | 3 | feet 3⅜ inches. |
| A hand is | 4 | inches. |
| A palm is | 3 | “ |
| A span | 9 | “ |
| A hair is equal to | ¹/₄₈ | of an inch. |
| A line is equal to | ¹/₁₂ | of an inch. |