DT-9919 / CEM Industrial 5-digit True RMS Waterproof Digital Frequency Capacitance Temperature Multimeter High resolution (0.01mV, 0.01 uA, 0.01 Ohm) 40,000-count display.
EA15-NIST / Extech เครื่องวัดอุณหภูมิ Temperature Dataloggers Dual input accepts Types J, K, E, T, R, S, and N thermocouples.Built-in datalogger stores up to 8800 data sets