Mercury-Filled Armored Thermometer has a range of -20° to 150°C and divisions of 1°F with an immersion depth of 3in (76mm). This mercury-in-glass 12in (305mm) long thermometer is for general laboratory use and has etched black divisions against a yellow background. It is contained within a rugged nickel-plated brass case that protects against breakage and a potential clean-up of hazardous material. The case has a slotted front for ease of reading, and built-in suspension rings.