The 4180 calibrator has a temperature range of –15 °C to 120 °C, with radiometric (non-contact infrared) display accuracy as good as ± 0.40 °C; and the 4181 calibrator measures from 35 °C to 500 °C, ...
There are many types of thermometers available for temperature readings. An accurate temperature reading is important for newborns and infants. A small temperature change can make a big difference.