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G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
G01D9/00—Recording measured values
G01D9/28—Producing one or more recordings, each recording being of the values of two or more different variables
G01D9/30—Producing one or more recordings, each recording being of the values of two or more different variables there being a separate recording element for each variable, e.g. multiple-pen recorder
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FR1165252D1957-01-231957-01-23Procédé pour enregistrer graphiquement des opérations et l'heure où celles-ci se produisent
ExpiredFR1165252A
(fr)