KITCHEN CRAFT STAINLESS STEEL MILK FROTHING THERMOMETER - IN SOUTH AFRICA

The easy to read Celsius and Fahrenheit dial has the ideal frothing temperature outlined, and clips easily to the side of a jug or saucepan to monitor the temperature as the milk is being warmed / frothed. For perfect froth for cappuccinos, liquid should reach a temperature of between 65 - 70C (149 - 158F). 14cm from dial to tip, the probe itself is 12.5cm. Why we have Fahrenheit and Celsius, a brief history: There are a bunch of stories attempting to explain how Fahrenheit, a German-Dutch physicist, devised his scale in 1724. In his scale the melting point of ice (32F) and the boiling point of water (212F) are 180 degrees apart. Maybe he thought that was neat, being opposites of each other. He also had a third point, the temperature of his body which he claimed was 98F. Or maybe he said it was 96F. Apparently he took a blank thermometer, marked the melting point of ice and the boiling point of water and for some reason said they were 180 degrees apart. Then for some other reason he said his body temperature was 96 marking up and down from that resulted in the freezing point and boiling point being 32 and 212. Celsius, a Swedish astronomer, took a different and more scientific approach in 1744. He took a blank thermometer, marked the boiling point of water and the melting point of ice and marked it off into 100 equal degrees, which is why it is sometimes called the centigrade scale. 100 is an easy to work with number, unlike 180. He didn't care what his body temp was, he made the thermometer and then took his temperature. He was also the first person to figure out that water boils at a higher temp at sea level than it does at higher altitudes. Or more precisely that waters boiling point varies as a function of atmospheric pressure. Generally speaking there is more air pressure at sea level than up in the mountains. He also figured out that air pressure has no effect on the melting point of ice. That's why he decided to use the melting point (or freezing point) as the start of his thermometer. Strangely enough, to us at least, he called that point 100 degrees and then the temperatures went down to the boiling point at 0. Apparently the famous Swedish botanist, Carolus Linnaeus, was the first to suggest and use a reversed Celsius scale with boiling at 100. Courtesy of http://www.answerbag.com/q_view/444846 How to convert: Fahrenheit = Temperature in Celsius multiplied by 9 divided by 5 and then add 32 Celsius = (Temperature in Fahrenheit minus 32) then divide by 9 and multiply by 5