• Webster's Revised Unabridged Dictionary
    • n Manograph (Engin) An optical device for making an indicator diagram for high-speed engines. It consists of a light-tight box or camera having at one end a small convex mirror which reflects a beam of light on to the ground glass or photographic plate at the other end. The mirror is pivoted so that it can be moved in one direction by a small plunger operated by an elastic metal diaphragm which closes a tube connected with the engine cylinder. It is also moved at right angles to this direction by a reducing motion, called a reproducer, so as to copy accurately on a smaller scale the motion of the engine piston. The resultant of these two movements imparts to the reflected beam of light a motion similar to that of the pencil of the ordinary indicator, and this can be traced on the sheet of ground glass, or photographed.
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Century Dictionary and Cyclopedia
    • n manograph A device in which a beam of light, moving over a ground-glass screen, shows the pressure in the cylinder at any point of the stroke for a given engine: used on high-speed engines, as of motor-cars, which are too small for ordinary indicators.
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Webster's Revised Unabridged Dictionary
Gr. thin, rare + -graph,: cf. F. manographe,


In science:

More details and further references can be found in the manographs by Resnick or de Haan and Fereira .
Strong mixing properties of max-infinitely divisible random fields