Log Log Duplex Vector
| Manufacturer | Keuffel & Esser |
| Model | 4083-3 Log Log Duplex Vector |
| Serial No. | 231293 |
| Scale length | 25 cm |
| Overall length | 31.8 cm |
| Width | 4.0 cm |
| Body/Slide materials | Celuloid on Mahogany |
| Post materials | Metal |
| Cursor materials | Celuloid / Metal / Glass |
| Scales |
LL02 LL03 DF [CF CI C] D LL3 LL2 Sh1 Sh2 Th A [B T SRT S] D DI LL01 LL1 |
| Accessories | K+E 4081 manual (1945) and 4083 supplement (1939). Tan leather case with clip ring (no clip). |
| Notes | Replacement lower cursor bar. |
| Tag No. | KE-4083-3 |