| Year | 1937 |
| Date | 13-May |
| Volume | 76 |
| Issue | 1,879 |
| Page | 453 |
| Category | Tool-Room Topics |
| Part | |
| Title | Accurate Setting-Up |
| Author | R.Hutcheson |
| Notes | The "John Bull" dial indicator, a "John Bull" test indicator, error in table and slide reproduced in job, testing table surface for parallelism with its plane of movement, testing squareness of spindle axis with table, of line of spindle travel with table |