| Year | 1967 |
| Date | 05-May |
| Volume | 133 |
| Issue | 3,320 |
| Page | 425 |
| Category | Workshop |
| Part | |
| Title | Elements of Spherical Turning |
| Author | Edgar T.Westbury |
| Notes | A review of methods and appliances. Freehand methods, cutting angles, special hand tools, gauging contours, generating spherical curves, a ball clamp, setting the tool point |