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Licence
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LicenseEllipsograph patented 6 July 1875 in Washington, D.C
Science Museum Group
© The Board of Trustees of the Science Museum
Ellipsograph patented 6 July 1875 in Washington, D.C. by Morton Toulmin and made by Watts & Co., Baltimore, Maryland, in walnut case with key
Details
- Category:
- Mathematics
- Object Number:
- 1988-734
- Measurements:
-
length 215 mm
width 78 mm
height 100 mm
box: length 243 mm
box: width 110 mm
box: height 135 mm
- type:
- curve drawing instruments and ellipsographs
- credit:
- Tesseract
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