with provision for altering speed of recording medium in accordance with the magnitude of the variable to be recorded

Full Title

Recording measured values > Producing one or more recordings of the values of a single variable > the recording element, e.g. stylus, being controlled in accordance with the variable, and the recording medium, e.g. paper roll, being controlled in accordance with time > recording occurring continuously > with provision for altering speed of recording medium in accordance with the magnitude of the variable to be recorded