Final answer:
A Bimetallic Stemmed Thermometer typically has an accuracy range within a few percent, with variations depending on quality and make. It operates on the principle of differential thermal expansion of two attached metal strips.
Step-by-step explanation:
The accuracy range of a Bimetallic Stemmed Thermometer typically falls within a few percent of the actual temperature. This type of thermometer consists of a coiled bimetallic strip made from two different metals, such as brass and steel, that expand and contract at different rates when subjected to temperature changes.
The accurate measurement is crucial to ensure that external factors, such as altering the circuit in measurement devices, do not introduce inaccuracy. While not mentioned in the provided material, the exact accuracy specs can vary depending on the manufacturer and the quality of the thermometer, but it is common for the quality ones to have an accuracy within ±1% or ±2% of the scale.