Industry's leading handheld thermometers that feature analog outputs for use with chart recorders or computer I/O cards, the 870 series has dual thermocouple inputs and respective linear analog outputs which produce 1mV/°C or 5/9 mV/°F in the 200° ranges and .1mV/°C or 5/90 mV/°F in the other ranges. The Model 871A uses Type K thermocouples to measure a temperature range from -40 to 1999°F (-40 to 1370°C) and the Model 872A uses type J thermocouples to measure from -40 to 1400°F (-40 to 760°C). An optional, vinyl carrying case, PN8668, is available for these models. 3-ft beaded wire thermocouple probes are supplied with each unit