MDS System Rietz Slide Rule

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This 10 inch plastic and mahogany Rietz system slide rule is stamped 'MDS, England' but was made in Germany. It may have been that the original maker was Castell as they used mahogany on some of their rules and their Rietz pattern had the same configuration of trig scales.Scales A [ B, C/ S, ST, T] D.

Further information and photographs can be seen at

Our slide rule, together with the original hard case, was kindly donated by Julian Bryant.

Manufacturer: MDS
Date: 1950

This exhibit has a reference ID of CH22000. Please quote this reference ID in any communication with the Centre for Computing History.


MDS System Rietz Slide Rule

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