| Manufacturer | Concise Co. Ltd. |
| Model | No. 28N, customized for Vickers Hydraulics (Sperry Rand) |
| Serial No. | |
| Overall diameter | 8.5 cm |
| Body/Slide materials | Plastic |
| Post materials | |
| Cursor materials | Plastic |
| Scales | D [C CI A K] Table of Conversion Factors |
| Accessories | Black vinyl case labeled "Concise No. 28N" |
| Notes | |
| Tag No. | CON-28N-VIC |
