| Faber-Castell 366 System Schumacher | |
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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 | 28 cm |
| Number of scales | 6 |
| Country of origin | Netherlands |
| Country of manufacturing | Germany |
| Year of manufacturing | 1921 |
| Status of the slide rule | Slightly damaged |
| Material of the slide rule | Celluloid on wood |
| Type of cursor | |
| Status of the box | Heavily damaged |
| Status of the manual | None |
| Collection number | 98 |
| Further comments | This is the only slide rule
Faber-Castell made with the Schumacher system. It is very rare. I still have to find out how the system works.
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