| Year | 1993 |
| Date | 03-Sep |
| Volume | 171 |
| Issue | 3,952 |
| Page | 292 |
| Category | Workshop |
| Part | |
| Title | Electromagnetic Etching Pen |
| Author | L.Tattersall |
| Notes | Describes a useful tool. Outer sleeve, core assembly, armature assembly, electrode assembly, using the pen, picture on page 255 |