Ordering Information:
RH300..........................Digital Psychrometer
RH300-NIST................RH300 with NIST Certificate
RH305..........................Digital Psychrometer Kit
RH305-NIST................RH305 with NIST Certificate
RH300-CAL..................33% and 75% RH calibration reference
TP890..........................Optional Thermistor Temperature Probe (for Model RH300)