Digital Oral Thermometer (Carton of 20)Unit : Carton of 20 The Digital Thermometer is suitable to be used on both adults and children, allowing you to take fast, reliable and highly accurate measurements of temperature. Directions of use: 1. Oral Use: Place thermometer under tongue. Close your mouth and breathe evenly through your nose to prevent the measurement from being influenced by inhaled exhaled air. Normal temperature between 35. 7C and 37. 3C 2. Rectal Use: Lubricate silver probe