A RARE ENGLISH ELLIPSPGRAPH
EARLY 19TH-CENTURY
the Farey-type ellipsograph in brass with two steel guide rules, comprised of two 4-inch circles fitted over one another, moved by a small rack and pinion, with a pair of milled screw heads, which enable different varieties of ellipse to be drawn, in fitted wooden case
6¾in. (17cm.) wide
A RARE ENGLISH ELLIPSPGRAPH
EARLY 19TH-CENTURY
the Farey-type ellipsograph in brass with two steel guide rules, comprised of two 4-inch circles fitted over one another, moved by a small rack and pinion, with a pair of milled screw heads, which enable different varieties of ellipse to be drawn, in fitted wooden case
6¾in. (17cm.) wide
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