| Year | 1941 |
| Date | 10-Jul |
| Volume | 85 |
| Issue | 2,096 |
| Page | 22 |
| Category | Lathe |
| Part | |
| Title | An Index for the Lathe Lead Screw |
| Author | Ian Bradley |
| Notes | Lead screw index wheel showing fixed index, boring table tool-post and bolt, general arrangement of lead screw index, lead screw index wheel with ball handle attached, components, photos by E.T.Westbury |