| Faber-Castell 67/34 Hämognost | |
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Front |
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Back |
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Front without slide |
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Pouch |
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| Length | 15 cm |
| Number of scales | 5 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | 1954 |
| Status of the slide rule | Near mint |
| Material of the slide rule | Plastic |
| Type of cursor | Clear plastic |
| Status of the box | Near mint |
| Type of box | |
| Status of the manual | None |
| Collection number | 122 |
| Further comments | This is an extremely rare specimen.
It is harldy ever offered on the market. The exact application is not known to me, but Erythrozyten are the German/Latin name for red blood cells. The slide rule was most likely used for a medical sedimentation test for red blood cells.
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