| Faber-Castell SKF special | |
|
Front |
|
|
|
|
|
Back |
|
|
|
|
|
Front without slide |
|
|
|
|
|
Back of the slide |
|
 |
|
| Box | |
|
|
|
| Length | 30 cm |
| Number of scales | 13 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | 1938 |
| Status of the slide rule | Normal signs of use |
| Material of the slide rule | Celluloid on wood |
| Type of cursor | Metal with glass |
| Status of the box | Normal signs of use |
| Type of box | Special wood |
| Status of the manual | None |
| Collection number | 73 |
| Further comments | This is a special slide rule for SKF
to perform calculations for roller bearings. I have never seen this one
ever listed in the catalogues. The special scales for the roller bearings are self-documented on the back of the slide rule. On the back of the box the name "Petermann" is written.
|
