| Faber-Castell 73/39 | |
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Front |
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Back |
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Front without slide |
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| Box | |
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| Length | 12 cm |
| Number of scales | 5 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | 1939 |
| Status of the slide rule | Normal signs of use |
| Material of the slide rule | Celluloid on wood (no reinforcement rods) |
| Type of cursor | Celluloid |
| Status of the box | Normal signs of use |
| Type of box | Real leather |
| Status of the manual | None |
| Collection number | 185 |
| Further comments | The company name on the back of the
slide rule is "Bayrische Strassenbau-Gesellschaft, R. Tagmann&Knape
m.b.H. "
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