![Surrealism - barograph drawing machine Dada or surrealist sculpture - a barograph creating an automatic drawing](http://www.christophermadden.art/contemporary-art-projects/contemporary-art-projects-images/barograph-creating-line-drawing-visual.jpg)
Drawing machine.
Study for a proposed sculpture. Photograph of a barograph, digital manipulation. January 2017
A photograph of a barograph digitally altered so that the arm of the barograph appears to be creating a fine pen and ink drawing of a landscape.
A barograph normally draws a graph recording air pressure over the course of time on a sheet of graph paper attached to a rotating drum.
This barograph is in the spirit of surrealism and dada – it is a scientific instrument appropriated for the purposes of art (In C P Snow’s two cultures thesis this would possibly count as cultural appropriation).