Geometrical pen

Geometrical pen, in wood case

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Geometrical pen, in wood case
Science Museum Group
© The Board of Trustees of the Science Museum

Geometrical pen, in wood case, with key: with ivory handle and various change wheels ( some teeth broken)

Details

Category:
Mathematics
Object Number:
1928-940
Materials:
ivory and wood (unidentified)
type:
drawing machines and geometrical pens
credit:
Thomas H. Court