Celen Química markets infrared thermometers in order to measure surfaces without the need for there to be any contact.
It works very simply: just aim at the area where you wish to calculate the temperature, press the button and, in just a second, you will know the temperature of the said area. In this way you can calculate the performance of engines, closed gear teeth boxes and interior ball-bearings, thereby preventing overwarming.
It is also very useful for preventing industrial accidents.