| Faber-Castell 1/94/394 Rietz/Bornemann | |
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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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| Box | |
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| Length | 30 cm |
| Number of scales | 11 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | 1935 |
| Status of the slide rule | Normal signs of use |
| Material of the slide rule | Celluloid on wood |
| Status of the box | Normal signs of use |
| Status of the manual | None |
| Collection number | 155 |
| Further comments | This slide rule looks very normal,
but has special names for the scales (e.g. OF/OZ instead of A/B). Otto
van Poelje guessed that OF and OZ meant "Oben-Fest" and "Oben-Ziehen".
Also the help text for the decimal point is different in this slide rula. On the goniometric scales there is some help text for placing the decimal point.
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