Ashcroft Pt100 [840X010-05] RTD Probe with 5ft Coiled Cable (with Handle), 6 inches x 0.125 inch. Ashcroft 840X010-05 PT100 4-wire RTD Temperature Probe for use with Hand Held Calibrator. (385 coefficient), 1/8 inch (0.125) diameter, 6 inch length, 304 stainless steel sheath, handle, and 5 ft. coiled cable. TA4F electrical connector for compatibility with AM2-RT1 interface modules. DIN Class A accuracy.