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 | No math image to display |
| 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.