What is the difference between industrial and food thermometer thermometer?

In the bimetallic thermometer in this category, used in industrial and food thermometer thermometer what's the difference? Give you to explain the following below. Industrial thermometer, we usually refer to below this, dial diameter above 50 mm, usually 80 mm, 100 mm is more, sheath maerial above 6 mm diameter, sheath maerial tail for flat tail, table for glass, installation direction can be axial, radial and universal or flange installation, no fixed screw to install. Food thermometer, we usually refer to below this, dial below 50 mm diameter, usually 25 mm, 50 mm more, sheath maerial diameter in 3. Around 8 mm, sheath maerial of tail is usually pointed tail, measured in food, convenient to insert table for PC or glass, installed in the axial direction.