| Faber-Castell 51/91/309 Schulrechenstab | |
|
Front |
|
|
|
|
|
Back |
|
|
|
|
|
Front without slide |
|
|
|
|
|
Back of the slide |
|
 |
|
| Box | |
|
|
|
| Length | 30cm |
| Number of scales | 9 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | 137 & 1938 |
| Status of the slide rule | Near mint |
| Material of the slide rule | Celluloid on wood |
| Type of cursor | Celluloid |
| Status of the box | Normal signs of use |
| Status of the manual | None |
| Collection number | 148 & 194 |
| Further comments | Two identical specimens. The only
difference is that the box of the number 194 is 3 mm wider than the
other box!
|
