Hardwood thermometer with mercury-free kerosene liquid display glass tube. Celsius and Fahrenheit temperature scale. Suitable for indoor and outdoor use. Hanging hook. Size 250 x 60 x 10mm. Hardwood thermometer with mercury-free kerosene liquid display glass tube. Celsius and Fahrenheit temperature scale. Suitable for indoor and outdoor use. Hanging hook. Size 250 x 60 x 10mm.