A transition between paragraphs can be a word or two (however, for example, similarly), a phrase, or a sentence. Transitions can be at the end of the first paragraph, at the beginning of the second paragraph, or in both places.
There are a number of different types of thermometers, but all have two basic elements. First, they must have a temperature sensor (mercury, dissimilar metals, etc.) capable of detecting a change of temperature. Second, they must have a means (such as a scale) of measuring the degree of change. Temporal Thermometer Accurate temperature with a gentle forehead scan.
So to draw the thermometer, I start with two, well one, and then a second parallel straight line, then I round off the top, with a half circle, and then at the bottom, that's the bulb of the thermometer, I draw a partial circle like this.