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Standard Slide Rules

Faber-Castell

 

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Addiator 111/54A Business 57/22 Super Business 1/28 Advanced Student 57/88
Business Slide Rule 111/22 Novo-Duplex 62/83 (7.5 in)
118/98 Elektro Student Rietz 57/87 Rietz 1/87 Rietz 167/87 6 inch
Model 1/22 Disponent