| Aristo No. 814 | |
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Front |
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Back |
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Front without slide |
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Back of the slide |
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Sleeve |
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| Length | 15 cm |
| Number of scales | 14 |
| Country of origin | |
| Country of manufacturing | Germany |
| Year of manufacturing | |
| Status of the slide rule | Normal signs of use |
| Material of the slide rule | Plastic |
| Type of cursor | Clear plastic |
| Status of the box | Normal signs of use |
| Status of the manual | None |
| Collection number | 228 |
| Further comments | Small electrical slide rule. I especially like the small lens in the left side of the slide. Most likely the pouch is not original, as it says "Zeiss Ikon", while the back of the slide rule says "Gebr. Ruhstrat - Göttingen". The Ruhstrat company still exists by the way. |
