Signedlabel on package: Bendix Friez CHARTS FOR RECORDING INSTRUMENTS / MAKERS OF THE FINEST WEATHER INSTRUMENTS SINCE 1876 / FRIEZ INSTRUMENT DIVISION / BENDIX AVIATION CORPORATION / BALTIMORE 4 MD
Inscribedon the side of package: 503290 200
charts labeled on one side: PRINTED IN U.S.A. WHEN ORDERING BINDER FOR / THIS CHART SPECIFY NO (?) PART NO (?) / CHART NO. 200W/ 185 HOURS / TEMPERATURE DEGREES F / USE PEN NO. 1 PART NO. 500400 / BENDIX AVIATION CORPORATION / FRIEZ INSTRUMENT DIVISION, BALTIMORE 4 Md U.S.A. / INSTRUMENT NO RECORD FOR WEEK ENDING / STATION DATE
FunctionCharts for recording data from a thermograph, a device that registers the temperature over an extended period.