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Integraph by Coradi No.103 in box

C.V. Boys' integraph with case

1880-1885

Barker's integraph in box

Integraph by J.Amsler with wooden case. From Royal Aircraft Establishment

1910-1920
Wooden box containing Amsler's integraph, for calculating the area and first two moments, with one counterweight, three tracer arms, and a guide rail 53" long in its own box

Wooden box containing Amsler's integraph

Integraph by Coradi No.10 in box

Integraph by Coradi No.10 in box

Prototype model integraph with wooden case by Stanley, London.

Prototype model integraph with wooden case by Stanley

1949-1951
Abdank-Abakanowicz integraph made by G. Coradi, Zurich, with extension tracer arm, two ink pens and one lead holder, in wooden box 16 1/2" x 22" x 7"

Abdank-Abakanowicz integraph made by G. Coradi