What type of increments are used on a magazine thermometer?

A magazine thermometer typically uses 20-degree increments. This design allows for relatively precise readings while still simplifying the calibration process. The 20-degree intervals provide a good balance between readability and detail, making it suitable for general use in settings where an approximation is sufficient.

Using larger increments, such as 30 or 50 degrees, would result in less precision, which negates the purpose of having a thermometer that is meant to provide a quick and accurate reference of temperature. Similarly, while 10-degree increments would allow for finer granularity, it could make the thermometer more complicated and harder to read at a quick glance. Thus, 20-degree increments are optimal for this type of thermometer.