| Faber-Castell 51/22 Schulrechenstab | |
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Front |
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Front without slide |
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Back of the slide |
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| Box | |
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| Length | 30 cm |
| Number of scales | 8 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | Most likely 1920-ies to 1930-ies |
| Status of the slide rule | Normals signs of use |
| Material of the slide rule | Celluloid on wood |
| Type of cursor | Celluloid |
| Status of the box | Normals signs of use |
| Status of the manual | None |
| Collection number | 183 |
| Further comments | Like many School slide rules, thisone
also doesn't have a date of manufacturing.
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