Abstract: Device for registration of temperature over an area by means of thermochromatic materials, which includes one, two or several layers (1, 3) with thermochromatical material, and one or several surrounding heat storing plastic layers (4, 6) that extend the reading time with maintained heat picture. In the case with several thermochromatic layers these preferably are of different termocromatical materials reacting at different temperatures and so chosen and so arranged that the termocromatic materials together constitute a scale of temperature areas. By means of a template the colors in the termocromatic layers can be interpreted to temperatures or temperature intervals and be noted.

Abstract: A device for measuring or visualizing temperature distribution along a line or an area, said device comprising areas of relatively good heat conducting or heat storing properties alternating with heat insulating or poorly heat storing areas, so that when the device is brought in contact with an object to be measured more heat energy is transferred to the heat absorbing or heat storing areas than to the heat insulating areas so that heat equalizing does not take place between the heat conducting or heat storing areas for a time, whereupon the temperature remains stable for a time.