The TCTemp1000 rugged thermocouple recorder, a submersible temperature gauge, is waterproof, N.I.S.T. traceable, reusable, and battery powered. It is a stand-alone, compact, portable, easy-to-use device that will measure and record up to 16,383 measurements per channel. The storage medium is non-volatile solid state memory, providing maximum data security even if the battery becomes discharged. Its real-time clock ensures that all the data is time and date stamped. This low cost device can be started and stopped directly from a computer and its small size allows it to fit almost anywhere.