Geometrical pen
- maker:
- Henry Perigal
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Geometrical pen:- made by H.Perigal
Perigal was an active member of London’s scientific societies during his long life. He had written on his gravestone: ‘A learned and ingenious geometrician, he investigated and illustrated the laws of compound circular motion.’ During the 1840s and 1850s he made many detailed drawings with this machine, which is a large and complex version of the geometric pen invented by Giambattista Suardi a century earlier. It can produce a vast range of cycloidal and epicycloidal curves combining the motion of the multiple gear wheels and offsets.
Details
- Category:
- Mathematics
- Object Number:
- 1910-151
- Materials:
- brass (copper, zinc alloy), wood (unidentified) and copper (metal)
- Measurements:
-
overall: 261 mm x 279 mm x 115 mm,
- type:
- drawing instruments and drawing pens
- credit:
- Perigal, F.
