Brass rule of triangular cross-section like Jackson's "charto-metrometer"
- maker:
- T Ertel und Sohn
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Science Museum Group
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Brass rule of triangular cross-section like Jackson's "charto-metrometer" but here engraved with name of inventor Gustave Rogister and maker Ertel & Sohn, Munich, 1843
Details
- Category:
- Mathematics
- Object Number:
- 1990-633
- Materials:
- brass
- type:
- rule (triangular)
- credit:
- Tesseract
