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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. The temperature range is -10 to 250 °C with 1 degree subdivisions. It is constructed of two types of tubing sealed together below the scale where the stem portion is made of very fine bore glass to minimize correction factors at immersion depths other than the mid-point of the stem. The scale portion is made of wide bore glass to facilitate reading the thermometer. Each thermometer is supplied with an instruction sheet and a list of correction factors. Choose from immersion ranges of 76-178 mm (3-7 inches) or 178-305 mm (7-12 inches).