| Year | 1937 |
| Date | 08-Apr |
| Volume | 76 |
| Issue | 1,874 |
| Page | 324 |
| Category | Tool-Room Topics |
| Part | |
| Title | Jig Bushes |
| Author | R.Hutcheson |
| Notes | Two mating components that are to be jig-drilled, jig-plate for drilling cylinder cover and flange, plain stationary bush, common form of slip bush, used with stationary liner bush, screw bush & liner bush with lower cylindrical guide, locking a slip bush |