| Sub-Type | Duplex Slide Rule |
|---|---|
| Brand | Faber-Castell (Castell) |
| Era | 1960s–1970s |
| Material | Wood Plastic |
| Country of Origin | Germany |
Check the listing for details. Faber-Castell 57/87 Duplex Slide Rule with Case & Instructions. Condition: Used, Made in Germany. Listed at 33.12 USD.
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