| Year | 1930 |
| Date | 13-Feb |
| Volume | 62 |
| Issue | 1,501 |
| Page | 147 |
| Category | Workshop |
| Part | |
| Title | Setting Jewelled Pivot Holes in Clocks and Other Instruments |
| Author | R.N.U.Pickering |
| Notes | Notes on the illustrations. Parts of jewel-hole settings, procedure in mounting jewel-holes, disposition of jewelled pivot holes in front movement plate of a regulator, complete jewel-hole settings |