Thermometer, Non-Mercury, Low Temperature, -100 to 50 °C

This thermometer is mineral spirit filled to eliminate the workplace and environmental hazards of mercury. It has a white back, a 6 to 7 mm outer diameter, and is 12 inches (30.5 mm) long. The temperature range is -100 to 50 °C with 1 degree subdivisions.  Choose from total immersion or partial (3") immersion.

Technical note: Fixed (or partial) immersion thermometers are to be submerged to the measurement line indicated on the thermometer for an accurate reading; a typical depth is 3". A variable (or total) immersion must be submerged to the within 1 cm of the thermometer’s liquid level for an accurate reading. A total immersion thermometer can the completely immersed, although it's difficult to read the scale.

Total/variable immersion thermometers are more precise because the liquid column is not exposed to ambient air. However the accuracy of each is the same.