| Manufacturer | Lafayette |
| Model | F-686 Vectorlog |
| Serial No. | |
| Scale length | 25 cm / (28.4 cm extended) |
| Overall length | 33.4 cm |
| Width | 4.7 cm |
| Body/Slide materials | Plastic on Bamboo |
| Post materials | Metal |
| Cursor materials | Nylon / Plastic |
| Scales |
Tr1 Tr2 P' P [Q ST Sr Sθ C]
D LL03 LL02 LL01 Sh1 Sh2 DF A [B CF Th CI C] D LL3 LL2 db |
| Accessories | Brown leather case good condition labeled 99-7102 (new # for F-686). |
| Notes | |
| Tag No. | LF-F686 |