| Faber-Castell 63/22R | |
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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 | 15 cm |
| Number of scales | 10 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | |
| Status of the slide rule | Normal signs of use |
| Material of the slide rule | Celluloid on wood |
| Type of cursor | Aluminium with glass |
| Status of the box | Normal signs of use |
| Type of box | Very thin green leather |
| Status of the manual | None |
| Collection number | 196 |
| Further comments | This addiator slide rule has various
names scratched on it. On the inside of the leather sleeve is written "D. Jacoby". On the addiator side : "R.M. Speer" as well as "D.H. Jacoby".
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