I spend a lot of time outside bicycling, hiking, camping, and gardening. In the winter I like to make things in the snow like sculptures, igloos, and snow castles. I can tell the temperature by the way the snow sticks together but I wanted a more reliable method. So I came up with the Temperature Display Device. Now I can watch what the temperature is doing before I make plans. If you use a thermometer often, you need this new weather instrument. It is ideal for farmers, greenhouse workers, ski resorts, heating and cooling companies, and even NASA.