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Type | Model No. | Maker | Country | Construction Material | Date | Scale Length | Area of Use |
Linear | Nestler / 20 Rietz | Nestler | Germany | Celluloid over wood | 1950's | 25 cm | General Calculations |
Notes: This is a Rietz (improved Mannheim) slide rule by Nestler. The Rietz arrangement of scales was invented by Max Rietz while he worked at Dennert & Pape. Rietz pattern slide rules were very popular in Europe.
Image 1
![](twelveinchers/images/1062a.jpg)
Image 2
![](twelveinchers/images/1062b.jpg)
Image 3
![](twelveinchers/images/1062c.jpg)
Image 4
![](twelveinchers/images/1062d.jpg)
Image 5
![](twelveinchers/images/1062e.jpg)
Image 6
![](twelveinchers/images/1062f.jpg)
Image 7
![](twelveinchers/images/1062g.jpg)