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One of the most critical parts of the heat treatment process is the quenching operation, which is defined as rapid cooling of a work-piece by immersing it into a quenching media such as water, oil, or polymer. Quenching is carried out for altering and achieving the desired mechanical properties of industrial materials. Hardness, microstructure changes, and surface finish obtained are a few of the most sought objectives of quenching and these are greatly influenced by cooling time, cooling rate, quench media, etc. The cooling rate of quenchant must be sufficiently fast for phase transformation of the material, thus changing the microstructure. But, very fast quenching may result in distortions or crack formation on the material. Therefore it is very critical to have comprehension and control over the quenching process. Normally a probe made up of Inconel 600 is used in a potable quenchometer to comparatively evaluate the cooling rate with different quenchants.