| Year | 1956 |
| Date | 29-Mar |
| Volume | 114 |
| Issue | 2,862 |
| Page | 536 |
| Category | Expert's Workshop |
| Part | |
| Title | Rule Holders |
| Author | Duplex |
| Notes | Taking measurements in confined spaces. The handle, forming the knurl, making the short rules, allowance for handle, other types of rule holders, setting tools at centre height |