Thermometer, Non-Mercury, 7/12 joint

This thermometer is mineral spirit filled to eliminate the workplace and environmental hazards of mercury. It has a white back, 2 degree subdivisions, a 6 to 7 mm outer diameter and a standard taper 7/12 inner ground joint. Immersion is measured from the bottom of the joint to the bottom of the mercury bulb.  Available in two temperature ranges and 20 or 40 mm immersion depth.