Thermometer, Non-Mercury, 3" Immersion

This thermometer is mineral spirit filled to eliminate the workplace and environmental hazards of mercury. It has a white back and a 6 to 7 mm outer diameter. Available in three temperature ranges, each with 1 degree subdivisions. The overall length of the thermometer is 305 mm (12 inches). It is calibrated for 76 mm (3 inch) 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.