Dickson SL4350 Temperature Chart Recorder with Digital Display, 4"/101mm Chart, 7-Day or 24-Hour Rotation, -22 to 122F Range Go to amazon.com Related posts Thing need consider when find chart recorder? FeatureDigital display7-Day or 24-hour recordingCelsius / Fahrenheit switchable2-3 year battery lifeSingle AA battery operation DescriptionA great size coupled with 2-3 year battery life makes this 4-inch (101mm) temperature chart recorder a great temperature data collection tool.