![Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales](https://images.squarespace-cdn.com/content/v1/60185ff470e83e7b6df2c3d7/1639734569295-R1T93D62ALAP8GR4MTV7/rdp_0611-003_DSC01426.jpg)
Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales
![Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales](https://images.squarespace-cdn.com/content/v1/60185ff470e83e7b6df2c3d7/1639734594378-3CA35V9CRV2IWM9MNEVD/rdp_0611-004_DSC01434.jpg)
Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales
![Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales](https://images.squarespace-cdn.com/content/v1/60185ff470e83e7b6df2c3d7/1639734562987-STBMG1LAIYV6VUN3TCUW/rdp_0611-001_DSC01447.jpg)
Slide Rule Faber Castell Novo Duplex 62/83 — Robert's collection of antique scientific instruments, curiosa and scales
![Faber Castell 62/83, Pocket Slide Rule. Made in Germany. Engineering Calculator. Vintage Slide Rule. - Etsy Faber Castell 62/83, Pocket Slide Rule. Made in Germany. Engineering Calculator. Vintage Slide Rule. - Etsy](https://i.etsystatic.com/35242770/r/il/c6379e/4320558815/il_fullxfull.4320558815_59ny.jpg)