Vintage Diwa Denmark Polylog No.930 Slide Rule Ruler With Leather Case

Vintage Blundell Harling S143-10 Slide Rule 10" Rietz Scales with Case New Rare

Vintage Fabel Castell 57 / 87 Rietz Slide Ruler

Vintage Jakar Pocket Slide Rule No.523A Rietz, Boxed with instructions and case

Vintage - Linex Denmark 76A Compass and Ecobra, Boxed.

Slide rule by Faber Castell Syst. Rietz 1/87 German Vintage Rule

A Linex Denmark ART. NR. 9 Professional Drawing Compass In Original Case

Faber Castell 57/87 Students Advanced Rietz Model Slide Rule Made In Austria