| Manufacturer | Keuffel & Esser |
| Model | 4055 |
| Serial No. | 524176 |
| Scale length | 25 cm |
| Overall length | 26.9 cm |
| Width | 2.8 cm |
| Body/Slide materials | Celuloid on Mahogany |
| Post materials | n/a |
| Cursor materials | Celuloid / Metal / Glass |
| Scales |
A [B C] D [S L T] |
| Accessories | Black cardboard case labeled "K&E / Favorite / trade mark / Slide Rule / 4055". 4185B Magnifier |
| Notes | |
| Tag No. | KE-4055 |