Glass Thermometers For Accurate Temperature Reading

Glass thermometers are traditional temperature-measuring instruments that consist of a sealed glass tube filled with a liquid, such as mercury or alcohol, which expands or contracts with temperature changes. The liquid level moves along a calibrated scale to indicate the temperature. These thermometers are simple, reliable, and widely used in laboratories, educational settings, and industrial applications, though mercury-based types are being phased out due to toxicity concerns.