Vintage Faber - Castell 1/98 ELEKTRO Slide Ruler Made in Germany

Faber Castell 2752/9 ruler Made In Germany

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Vintage Faber Castell 57/92 Slide Ruler in Original Box (1950s?)

Faber Castell 1613 30cm Wooden Ruler Made in Germany

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Faber Castell Ruler No 57/87 Vintage School Slide Rule for Draughing Drawing

Vintage Faber Castell Ruler in Plastic Box