Trig-O-Log
| Manufacturer | Charvoz Roos |
| Model | SR-111 |
| Serial No. | |
| Scale length | 25 cm |
| Overall length | 31.1 cm |
| Width | 4.0 cm |
| Body/Slide materials | Celuloid on wood |
| Post materials | Metal |
| Cursor materials | Plastic |
| Scales |
L LL1 DF [CF CIF CI C] D LL3 LL2 LL0 LL00 A [B K CI C] S ST T |
| Accessories | Brown leather case poor condition. |
| Notes | |
| Tag No. | CR-111 |