Directions for use：

Mechanical thermometers are not as sensitive as electronic

thermometers. They usually have to be heated in an oven for a

period of time, and the temperature is measured when the

thermometer is not changing.

The specific use：

Set the oven to you need to test the temperature, the

thermometer in the oven middle position in the middle of the best in online and then shut the oven door and the oven will then began to heat, heat pipes will turn red, finally will slowly back to black, on behalf of temporary stability for the oven temperature at this time, you can read the actual temperature, and adjust according to the circumstance of high or low!

What does bimetal thermometers use to measure

temperature?

metal heat bilges cold shrink, double metal mean two pieces of metal, a metal image of fast heat bilges cold shrink deformation variables to temperature changes, a slow response to temperature changes shape variables is small, two pieces of metal change, produce relative variables.The temperature can be measured according to the function relation between the relative shape variables and the temperature.