| Year | 1993 |
| Date | 16-Jul |
| Volume | 171 |
| Issue | 3,949 |
| Page | 106 |
| Category | Pete's Page |
| Part | 1 |
| Title | A Sine Bar |
| Author | Peter Spenlove-Spenlove |
| Notes | Describes making a sine bar. A valuable tool for accurate work, the bar in use, establishing the vertical height, back to the drawing |