Slide Rule for Calculating Timber Drying Time, by AWF, Berlin, 1936 | |||||||||||
| Inventory Number: | 18471 | ||||||||||
| Object Type: | Object | ||||||||||
| Persons: |
Prof. Franz Kollmann (Mathematical Formulae) Hans Schwerdt (Designer) (Manufacturer) | ||||||||||
| Date Created: | 1936 | ||||||||||
| Place Created: | Berlin Germany Europe |
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| Subject Classification(s): | Calculation Mathematical instruments Mathematics & Geometry | ||||||||||
| Accession Number: | 2021- | ||||||||||
| Primary Inscriptions: | Printed inscriptions on front, including title: "Künstliche Holztrocknung: Trockenzeit" (drying time for artificial seasoning of wood); "Formel: Kollmann, Stab-Entwurf: Schwerdt" (formulas by Kohlmann, rule design by Schwerdt), "Ausschuss für wirtschaftliche Fertigung AWF, Berlin W 9" (Committee for Economic Manufacturing), "Sonderrechenschieber SR 727". On reverse "Bauart Dr. Ing. Seehase, DRP, und Auslandspatente". | ||||||||||
| Provenance: | Presented by Ron Wynands. | ||||||||||
| Collection Group: | |||||||||||
| Dimensions: |
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Permalink: http://www.mhs.ox.ac.uk/object/inv/18471