Mathematisch-mechanisches Institut G. Coradi Zürich

Ott & Coradi (1874 – 1880)

Polar Planimeters (until about 1893)

Polar Planimeters (around 1893 – 1900)

Polar Planimeters (from about 1900)

Special Purpose Planimeters

Integraphs

Coordinatographs

Coradi AG (ca.1960 – 1985)