The Cooper Atkins SH66A-E - -032G - Thermistor Instrument is a NIST-certified thermistor instrument that is designed for use in multizone environmental chambers. This instrument is capable of measuring temperature in multiple zones simultaneously, making it a valuable tool for monitoring environmental conditions. The Cooper Atkins SH66A-E - -032G - Thermistor Instrument is a NIST-certified thermistor instrument that is designed for use in multizone environmental chambers. This instrument is capable of measuring temperature in multiple zones simultaneously, making it a valuable tool for monitoring environmental conditions.