| Faber-Castell 67/87rb | |
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Front |
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Back |
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Type mark |
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Back of the slide |
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No scales on the back |
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| Length | 16 cm |
| Number of scales | 11 |
| Country of origin | USA |
| Country of manufacturing | Germany |
| Year of manufacturing | Unknown |
| Status of the slide rule | Normal use |
| Material of the slide rule | Plastic with metal addiator |
| Type of cursor |
 |
| Status of the box | Normal signs of use |
| Type of box |
 |
| Status of the manual | None |
| Collection number | 117 |
| Further comments | This member of the 67/87 family
differs significantly from other ones. Normally the sin and tan scales
can be foun on the back of the slide. In this case they are on the
front.
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