Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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