Dial stem thermometer is usually used to measure internal temperature of food. The thermometer should range from 50 F - 550 F. To use this, the tip of the probe is inserted to the meat or dipped in the soup and then it conducts heat and gives an overestimate temperature of the food. Most desired meat temperature ranges from 145 F (63 C) to 170F (77 C) and various cooking temperature differs from the meat type.