Geratherm mercury free rectal thermometer is a dual scale fahrenheit and celsius.
1.Grasp top of thermometer and shake with a snapping motion of the wrist. Repeat until line is well below 35.5 degrees C (96 degrees F). 2.Apply a water-soluble lubricant to the tip before inserting 1 inch (2.5 cm). Temperature reading in a minimum of 3 minutes. 3.Disinfect with cotton ball or gauze square saturated with alcohol before and after use.