Semicircular rolling protractor rule
- Made:
- Germany
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Science Museum Group
© The Board of Trustees of the Science Museum
Semicircular rolling protractor rule, brass, with two sets of spring-loaded wheels for horizontal and vertical motion, German
Details
- Category:
- Mathematics
- Object Number:
- 1989-558
- type:
- drawing instruments and semi-circular protractors
- credit:
- Tesseract
