FIELDPIECE - ST4 - Dual Temperature MeterFIELDPIECE ST4 Dual Temperature Meter ST4 The Fieldpiece ST4 Dual Temperature Meter measures two temperatures simultaneously using the included k type, wrap tab beaded thermocouples. The technology inside the ST4 provides superior temperature compensation in rapidly changing environments commonly found while performing field service. Use the ST4 to find Delta T and just about any temperature split you want to measure. Displays T1, T2 and T1 T2 in big