The provisions of this standard apply to those thermometers called "Clinical Thermometers", of the mercury-in-glass type, with a maximum device, intended for measurement of the internal human body temperature. This standard does not apply to special-purpose thermometers (thermometers for premature babies, ovulation thermometers), which owing to their measurement range, scale interval or maximum permissible error, do not meet the following requirements of this standard for the thermometers specified herein.