Eti horizontal fridge freezer thermometer eti 803 050 this spirit filled fridge freezer thermometer from eti indicates temperature over a range from 30 to 40 deg c in 1 deg c divisions with clear bright colour coded zones and star markings for ease of reading so is suitable for use by caterers and those involved in the preparation and storage of food the display is easy to read and has standard freezer markings incorporated into the scale eti 803 050 horizontal fridge freezer thermometer