PART VWEIGHTS
Materials and principles of construction
52
1
The adjusting holes in weights other than weights made of iron shall be circular and of the following approximate dimensions:—
Purported value of weight | Diameter | Depth | Approximate minimum distance of lead from surface when new |
|---|---|---|---|
inches | inches | inches | |
Other than flat-circular shape:— | |||
56 pounds | 1½ | 2 | 1 |
50 pounds | 1½ | 2 | 1 |
28 pounds | 1 | 1½ | ¾ |
20 pounds | 1 | 1½ | ¾ |
14 pounds | 1 | 1½ | ¾ |
10 pounds | ¾ | 1 | ½ |
7 pounds | ¾ | 1 | ½ |
5 pounds | ¾ | 1 | ½ |
4 pounds | ¾ | 1 | ½ |
2 pounds | ¾ | 1 | ½ |
1 pound | ½ | ¾ | ⅜ |
8 ounces | ½ | ¾ | ⅜ |
4 ounces | ⅜ | ⅝ | ¼ |
2 ounces | ⅜ | ⅝ | ¼ |
1 ounce | ¼ | ⅜ | |
Flat-circular shape:— | |||
4 pounds | ¾ | ⅗ths centre thickness of weight | ⅕th centre thickness of weight |
2 pounds | ¾ | ⅗ths centre thickness of weight | ⅕th centre thickness of weight |
1 pound | ¾ | ⅗ths centre thickness of weight | ⅕th centre thickness of weight |
8 ounces | ½ | ⅗ths centre thickness of weight | ⅕ths centre thickness of weight |
4 ounces | ½ | ⅗ths centre thickness of weight | ⅕ths centre thickness of weight |
2 ounces | ¼ | ⅗ ths centre thickness of weight | ⅕ths centre thickness of weight |
1 ounce | ¼ | ⅗ths centre thickness of weight | ⅕ths centre thickness of weight |
2
The minimum distance of the lead (when new) from the surface of the weight shall correspond approximately to that specified in the fourth column of the foregoing table.