- Scala thermometer for making the perfect steak and also for other types of meat, clear illustrations on the display show ideal temperature ranges, only if the meat or poultry reach the required core temperature, can you be sure that all the bacteria are killed, the length of the thermometer is 14cm , Material: Cromargan 18/10 stainless steel , dishwasher-safe, dimensionally stable, hygienic, acid resistant and indestructible, high quality, heat resistant glass up to 250°C