5. Figure 9-1 Celsius and Fahrenheit temperature scales. (From Clayton BD, Stock YN: Basic pharmacology for nurses, ed. 14, St. Louis, 2007, Mosby.) Note: Glass thermometers pictured here are for demonstration purposes only. Electronic digital temperature devices are more commonly used in health care settings. Figure 9-2 Ranges of normal temperature values and physiological consequences of abnormal body temperature. (From Potter PA, Perry AG: Fundamentals of nursing, ed. 7, St. Louis, 2009, Mosby.)