| Name | Keuffel & Esser 4097 Ever - There |
| Front Scales | DF = CF CI C = D |
| Back Scales | 5inch 13cm |
| Type of Rule | |
| Material | Engine Divided White Xylonite (existence implied by 4097B, but not known to exist) |
| Dimension (mm) | |
| Area of Use | |
| Origin of Rule | Michael O'Leary |
| Match Number | 4371 |
| Comment | |
| Thumbnail | No Picture |